Answer:
C. Gradually learned to escape more quickly
Step-by-step explanation:
This is an example of operant conditioning using reinforcement. There are many types of reinforcement but generally they are used to encourage certain behaviors. In this case, the reinforcement is in the form of a reward, and motivates the cats to escape the box. Operant conditioning is when you try to increase or eliminate a certain behavior from someone. In this example the behavior is escaping the box and the reinforcer/motivation is the reward. Its the same as when you teach a dog to sit, the more they are rewarded with treats, they will be more eager to repeat that behavior.
sorry if this is confusing, hope it helps