As he was about to enter the mall, Evan was approached by someone and asked to wear a small green ribbon on his shirt to show his support for the "Save the Squirrels" campaign. Evan wasn't quite sure that squirrels were actually endangered, but he agreed to wear the ribbon. A week later, Evan was approached again and asked to contribute $10 to help save the squirrels. Though he would have rather spent his money elsewhere, he agreed. Evan has been the victim of the ____ technique.

a. lowballing
b. foot-in-the-door
c. door-in-the-face
d. that's-not-all

b