It is an election year, and a volunteer asks if Mrs. Timmins would put a small, one-foot sign in her yard. She agrees. The next week, her husband cannot believe that she agreed to let the volunteer put a new, three-foot-wide sign on the front lawn. This example illustrates:.1. the bystander effect2. diffusion of responsibility3. the door-in-the-face technique4. the foot-in-the-door technique

4. the foot-in-the-door technique        

Explanation:

The term "foot-in-the-door technique" is also written as FITD, and is described as one of the "compliance tactic" that is being focused on making an individual get agreed for a bigger request by convincing him or her for a smaller request initially.

Example: As given in the question above, the volunteer agreed Mrs Timmins to put a small one-foot signboard in her yard and after that the next week the volunteer agreed her to put a three-foot-wide signboard on the front lawn.

In the question above, the given statement is an example of the foot-in-the-door technique.

the answer is

a) revise existing treaties

b) do away with political alliances

c) prevent the spread of communism

d) bring an end to european colonization

the main goal of the southeast asia treaty organization was to prevent the spread of communism in southeast asia.