In this section, “drug” means cocaine, heroin, methamphetamine, or a derivative of cocaine, heroin, or methamphetamine. If, after consideration of factors as required in this section, a juvenile court finds by clear and convincing evidence that a parent is unfit to remain in a parental relationship with the child or that exceptional circumstances exist that would make a continuation of the parental relationship detrimental to the best interests of the child such that terminating the rights of the parent is in a child’s best interests, the juvenile court may grant guardianship of the child without consent otherwise required under this subtitle and over the child’s objection. A juvenile court need not consider any factor listed in subsection (d) of this section in determining a child’s best interests if, after a thorough investigation by a local department, the juvenile court finds that: the identities of the child’s parents are unknown; and during the 60 days immediately after the child’s adjudication as a child in need of assistance, no one has claimed to be the child’s parent. Except as provided in subsection (c) of this section, in ruling on a petition for guardianship of a child, a juvenile court shall give primary consideration to the health and safety of the child and consideration to all other factors needed to determine whether terminating a parent’s rights is in the child’s best interests, including: all services offered to the parent before the child’s placement, whether offered by a local department, another agency, or a professional; the extent, nature, and timeliness of services offered by a local department to facilitate reunion of the child and parent; and the extent to which a local department and parent have fulfilled their obligations under a social services agreement, if any; the results of the parent’s effort to adjust the parent’s circumstances, condition, or conduct to make it in the child’s best interests for the child to be returned to the parent’s home, including: the extent to which the parent has maintained regular contact with: the child; the local department to which the child is committed; and if feasible, the child’s caregiver; the parent’s contribution to a reasonable part of the child’s care and support, if the parent is financially able to do so; the existence of a parental disability that makes the parent consistently unable to care for the child’s immediate and ongoing physical or psychological needs for long periods of time; and whether additional services would be likely to bring about a lasting parental adjustment so that the child could be returned to the parent within an ascertainable time not to exceed 18 months from the date of placement unless the juvenile court makes a specific finding that it is in the child’s best interests to extend the time for a specified period; whether: the parent has abused or neglected the child or a minor and the seriousness of the abuse or neglect; on admission to a hospital for the child’s delivery, the mother tested positive for a drug as evidenced by a positive toxicology test; or upon the birth of the child, the child tested positive for a drug as evidenced by a positive toxicology test; and the mother refused the level of drug treatment recommended by a qualified addictions specialist, as defined in § 5–1201 of this title, or by a physician or psychologist, as defined in the Health Occupations Article; the parent subjected the child to: chronic abuse; chronic and life–threatening neglect; sexual abuse; or torture; the parent has been convicted, in any state or any court of the United States, of: a crime of violence against: a minor offspring of the parent; the child; or another parent of the child; or aiding or abetting, conspiring, or soliciting to commit a crime described in item 1 of this item; and the parent has involuntarily lost parental rights to a sibling of the child; and the child’s emotional ties with and feelings toward the child’s parents, the child’s siblings, and others who may affect the child’s best interests significantly; the child’s adjustment to: community; home; placement; and school; the child’s feelings about severance of the parent–child relationship; and the likely impact of terminating parental rights on the child’s well–being. A juvenile court shall consider the evidence under subsection (d)(3)(i) and (ii) of this section as to a continuing or serious act or condition and may waive a local department’s obligations for services described in subsection (d)(1) of this section if, after appropriate evaluation of efforts made and services offered, the juvenile court finds by clear and convincing evidence that a waiver is in the child’s best interests. A juvenile court may waive a local department’s obligations for services described in subsection (d)(1) of this section if the juvenile court finds by clear and convincing evidence that one or more of the acts or circumstances listed in subsection (d)(3)(iii), (iv), or (v) of this section exists. If a juvenile court waives reunification efforts under § 3–812(d) of the Courts Article, the juvenile court may not consider any factor under subsection (d)(1) of this section. If a juvenile court finds that an act or circumstance listed in subsection (d)(3)(iii), (iv), or (v) of this section exists, the juvenile court shall make a specific finding, based on facts in the record, whether return of the child to a parent’s custody poses an unacceptable risk to the child’s future safety. If a parent has consented to guardianship in accordance with § 5–320(a)(1)(iii)1 of this subtitle, the loss of parental rights shall be considered voluntary.