Explanation:

- Option 1: Couvade – This refers to a custom where the husband mimics or sympathetically experiences his wife’s childbirth pains or rituals. It does not relate to kinship with mother’s brother.

- Option 2: Amitate – This term is about the special social role and prominence of the mother’s brother (maternal uncle) in certain kinship systems.

- Option 3: Avuncular – This is linked to societies where the mother’s brother (maternal uncle) holds an important place, often more than the biological father, in the child’s life.

- Option 4: Teknonymy – This is a naming practice where parents are referred to by the names of their children, not related to the mother’s brother.

The correct answer is:

- Option 3: Avuncular