Answer:
a.) the foot-in-the-door technique
Step-by-step explanation:
Foot-in-the-door technique: In psychology, the term foot-in-the-door technique or FITD technique is defined as a form of compliance that focuses on making a person agree for any large request by first making the person agree to a small request. This technique usually persuades a person to agree for specific actions.
Example: A person asks his or her neighbor to keep his or her per for one day as the person was going out later the person asked to give water to the plants as well.