Use the Following to Answer Questions

Use the following to answer questions :
Refer to the graph below.

In an experiment, rats were placed in a complex maze with several one-way doors so that a rat wandering around would eventually reach the goal box. When a rat reached the goal box, it was returned to its home cage. This was repeated for several days.
Rats were assigned to one of three groups:
• Group 1 was provided food in the goal box every day.
• Group 2 was provided food in the goal box beginning on the 11th day.
• Group 3 was never provided food in the goal box.
Researchers measured how many errors the rats made across trials on the way to the goal box. Results are shown in the graph.
-The purpose of this experiment was to determine if rats

A) were more or less prone to learned helplessness over time.
B) were capable of learning even in the absence of reinforcement, such as food.
C) would learn their way around a maze more quickly over time.
D) learned more quickly with a fixed ratio or variable ratio reinforcement schedule.