Renata is looking for a personal trainer to get her started on a healthy and effective exercise program. What is the most important factor that should influence her choice?
O a. The trainer's physique
O b. The trainer's rate per session
O c. The trainer's athletic experience
O d. The trainer's certification credentials

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.