Melissa adequately studied for her short-answer psychology exam. However, while taking the final she could not remember the material she previously retained. According to the computer information-processing model of memory Melissa is having difficulty with .

Retrieval

Explanation:

Retrieval is the process of memory. In this process, an individual can recall the information. Information related to our events, images, photo, autobiography all is stored in memory. If somebody is not recalling something, it does not mean that the information is not in memory. This problem can be related to the retrieval process where it locates.  

Thus here Melissa adequately studied for her short answer type question of psychology. According to the computer information processing model of the memory. Melissa faced difficulty in the retrieval process.

i only have part a but here is the first one: - lewis and clark are born

- lewis marries sacajawea and clark is jealous  

- clark drowns lewis and then goes to jail