The type of learning in which voluntary responses come to be controlled by their consequences is

A) observational learning.
B) classical conditioning.
C) operant conditioning.
D) reinforcement.

Operant conditioning is the type of learning in which voluntary responses come to be controlled by their consequences. In this type of learning, behavior is strengthened or weakened based on the consequences that follow it, such as rewards or punishments. Observational learning involves learning by watching others, while classical conditioning involves learning through association between stimuli. Reinforcement is a concept within operant conditioning and refers to any stimulus that increases the likelihood of a behavior being repeated.