Tim Repeatedly Placed His Pigeon in a Cage, with Birdseed

Multiple Choice

Tim repeatedly placed his pigeon in a cage, with birdseed just outside the cage door. The only way the pigeon could reach the birdseed was to peck a button fixed on one of the walls. This opened the door and allowed the pigeon to reach the seed. According to the law of effect, which of the following would most likely occur?

A) The pigeon would ignore the birdseed.
B) The pigeon would experience frustration and go to sleep.
C) The pigeon would eventually peck the button and access the food, but never try to do this again.
D) The pigeon would eventually peck the button and access the food, and each subsequent time, peck the button more quickly than before.