Baby Michael Has Normal Hearing, but Both of His Parents

Multiple Choice

Baby Michael has normal hearing, but both of his parents are deaf and use sign language to communicate. During Michael's first year of life, they enroll him in day care in order for Michael to hear normal speech

A) because the first year is a sensitive period for learning to develop peer relationships.
B) because the first year is a sensitive period for language development.
C) because there is no sensitive period for language development, but a child must be exposed to normal speech at all times.
D) for none of these reasons.