This demonstrates latent learning.
Latent learning is a type of learning which is not immediately obvious and which occurs without any type of reinforcement. So those rats who did not receive a reward learned what they needed to do even without the food reward, whereas the other rats might forget what they learned immediately.
The answer is A. They were serving for pay and were willing to switch sides.
D, it picks two top candidates from two different political parties to go on for president.
