Suppose a baby grows up in a home with its parents and grandparents. the parents speak one language and the grandparents speak another, so the baby hears both languages in the home. what will most likely happen to the baby's ability to perceive and produce phonemes from the two languages at about one year old?

Phoneme may be defined as the sound unit that helps to distinguish between the different sounds. Minimal pairs or different language of words are used in phonemes.

The children has well developed ability to catch the phonemes. The one year old child can produce phonemes from both the parents and grandparents language.  The baby has equal ability to understand the different languages and perceive different words.

sadly i believe the answer is d