Las articulacion de tipo diartrosis son inmoviles?

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

Cancer is 100% preventable if you follow all the necessary healthy behaviors. true or false