Answer: Foot-in-the door mechanism
Step-by-step explanation:
Foot in the door technique is the mechanism in which a person tends to persuade other through making a small request or asking for small favor first.If the person agrees for fulfilling small request then requester moves on for large request.
This is an tactical approach for making a person agree on large intended request after succeeding from convincing them for agreeing on small favor.
Example-asking for small amount of money for need and later borrowing more money from parents .