Any child residing in Texas may be adopted if-
1. the parent-child relationship between the child and each living parent has been or is terminated; or
2. the parent whose rights have not been terminated is the spouse of the petitioner in a stepparent adoption; or
3. the child is at least two years old, one parent's parental rights have been terminated, the person seeking adoption is the child's former stepparent and has been a managing conservator or has had actual care, possession, and control of the child for a period of six months preceding the adoption, and the nonterminated parent consents to the adoption; or
4. the child is at least two years old, one parent's parental rights have been terminated, and the person seeking the adoption is the child's former stepparent and has been a managing conservator or has had actual care, possession, and control of the child for a period of one year preceding the adoption.
