Babbies is not a word. If you mean the plural of the noun baby, which is babies, the possessive form is babies'. Example:
All of the babies' diapers needed changing.
The possessive form for baby, is baby's.
The singular possessive to the word baby is baby's.
The possessive form of the noun baby is baby's.Example: What is the baby's name?
plural possessive form: babies' singular possessive form: baby's
Baby's
The plural of baby is babies, so the plural possessive is babies'.
baby's
The possessive form is Arturo's baby sister.
The possessive form of the singular noun baby is baby's.Example: The baby's name is Matthew.
Baby's
baby - baby's
The possessive form is baby's.baby's