The primary difference between the research of Sheriff (1936) and Asch (1951) is that:
a. Sheriff was able to demonstrate conformity, while Asch was not.
b. Asch was able to demonstrate conformity, while Sheriff was not.
c. Sheriff relied on an ambiguous task, while Asch used an unambiguous task.
d. Asch relied on an ambiguous task, while Sheriff used an unambiguous task.

c. Sheriff relied on an ambiguous task, while Asch used an unambiguous task.

Explanation:

Sheriff’s research talked about things related to autokinetics.It is the deepest phase of conformity. The beliefs of a group usually become part of a persons belief system. This deep beliefs made it ambiguous and difficult to understand.

Meanwhile Asch experiment deals with aligning with the majority publicly despite not really agreeing with them in private. This is much relatable and simple.

the correct answer on edgen is:

(c.) prevent the spread of communism.

i just took the test.