Cyberbullying is sometimes a criminal act

Which of the following is an important function of child-directed speech? (a) it captures the infant’s attention and maintains communication. (b) it reduces the occurrence of infantile amnesia for the earliest memories of infancy. (c) it reduces the need for reciprocal interaction between caregivers and children. (d) it assists in prolonging rem sleep in infants.

Ireally need to know this answer asap

Christopher came down with the chicken pox after spending time in his child’s day care. what like in the chain of transmission is this scenario