What are the purposes of reflexes? - they allow infants to respond adaptively to their environment. - they are survival mechanisms, which are genetically carried. - they are movements that have an evolutionary purpose but are not necessary in the present day. - to the infant exercise.

Option A and Option B

Explanation:

Reflexes can be defined as the mechanism by which the organism react to the external environment in response to the stimuli.

It is important for all the organism that tend to survive in the external environment. In infants these reflexes are very important because they cannot speak and their organs are not that much functional at that time.

Reflexes are survival mechanism for the infants to survive and they are carried genetically. Some infant have slow reflex and some have fast reflex it is based on the genetic factor carried by the parents.

the correct answer is:

a population changes in response to a change in the environment.