Suppose you want people in your apartment building to stop throwing their junk mail on the floor of the mailroom. Which of the following would be least likely to work? a. Set an example by picking up...

Suppose you want people in your apartment building to stop throwing their junk mail on the floor of the mailroom. Which of the following would be least likely to work?

a. Set an example by picking up the litter yourself when people are watching.

b. Post a sign informing people that there is a recycling center on the other side of town that accepts junk mail.

c. Clean up all the litter in the mailroom, but leave one very noticeable piece of trash on the floor.

d. Post a sign in the mailroom that says, “Join your fellow residents in helping to keep things clean—90% of residents recycle their junk mail.”