During a lecture about world war ii, mr. cochran tells his class about some of the major leaders of the countries involved in the war. he then asks kathy to identify the leader of great britain during world war ii, and she correctly responds, "winston churchill." at the time she answers the question, kathy is exhibiting:

retrieval

Explanation:

Retrieval refers to the processes of getting information back from the memory system. In that respect, there exist cognitive processes which affect storage and retrieval of information. Since Mr Cochran mentions world leaders during the war and immediately asks Kathy about one of them, it demonstrates that, through the use of the sensory register, it is possible to remember something heard a few seconds ago, even without  paying attention to it. Thus, attention is important because it moves data from the sensory register into the working memory.

c. explains words’ origins and variations.