What is the direct object in the sentence?

Logan studied rocketry in science class.

A.

rocketry

B.

science

C.

class

D.

studied

A direct object is a word or word phrase that receives the action done by the subject. It usually answers the question "what?". In the sentence, "Logan studied rocketry in science class", the direct object in this sentence is the word "rocketry". It clearly answers the question, "What did Logan study in science class?". So the answer is letter A.