Professor wallace studies memory in people who have had strokes. professor hansen studies people who claim to have clear memories of events that happened over three decades ago. such research on the extremes of memory: a. us to understand how memory works. b. explains how consciousness works. c. is not useful to psychologists who study normal memory. d. makes us realize that it is impossible to study memory.

The correct option is A)  helps us to understand how memory works.

Explanation:

The study of the human brain is a complex one. Psychologists and scientists work hand in hand to understand various aspects of the human brain. Although, we now have a piece of knowledge about the different parts of the brain and their activities, yet we still have a lot to learn about the human brain and controlling of certain activities by it.

Studying patients who still have clear memories of three decades ago will have Professor Wallace understand how memories are generated in a person and whether the phenomenon is unique to a person or it is common to all human beings.

i would say b probably

cannabis

explanation:

(assuming this is the us) google it. law states you can't have weed.