Esther Thelen Found That the Stepping Reflex Reappears When Babies

Multiple Choice

Esther Thelen found that the stepping reflex reappears when babies over 3 months of age are partially submerged in water. The finding supports which of the following explanations of this behavior?

A) It is an involuntary reflex that disappears as the cerebral cortex changes.
B) It is an involuntary reflex that seems to disappear in most conditions due to changes in baby's muscle mass and weight.
C) It is a voluntary behavior that is acquired with practice.
D) It is a learned behavior that disappears due to lack of reinforcement.