Aballoon popped and made bobby cry. it happened again when he was at a friend's birthday party. now, when bobby sees a balloon he starts to cry. a behaviorist would say that bobby cries in response to the balloon because

a. bservational learning
b. operant conditioning
c. modeling
d. classical conditioning

D. classical conditioning          

Explanation:

Classical conditioning is a term proposed by one of the most influential psychologist's names Ivan Pavlov while researching with dogs and he has described classical conditioning as a learning theory that encompasses a stimulus and a response.

Classical conditioning in psychology referred to as the process in which a particular stimulus gives rise to a learned response when connected with a neutral stimulus.

In the question above, the given statement signifies the classical conditioning.

i’m   sure probably just geuss and see which one you can get right, i’m pretty sure it is the combination of goods and services