Freedman and fraser's (1966) study where they asked participants to put a sign up in their yard was an example of: group of answer choices foot-in-the-door door-in-the-face scarcity reciprocity

The correct answer is foot-in-the-door is the name of the example where participants are asked to put a sign up in their yard.

Explanation:

An easier way to explain this example is that for sosmeone to agree to do something, they may offer a reward to get a person to agree to do it.

because of the war the westeners befriended japan and each other advance.