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.

the aksumite empire was an ancient kingdom located in what is now northern ethiopia from the period of 100 ad to 940 ad. its capital was the city of aksum. the kingdom established itself as one of the 4 great powers at its time, along with persia, rome, and china.

the kingdom was rich in goods like gold, iron, and salt. it established strong commercial ties with the regions governed by rome, egypt, and persia (arabia). aksum was a key location in this commercial network. trade was also facilitated with the introduction of the aksumite currency.