The experimental rats were being raised in separate environments. One group lived in the traditional cage in a quiet, but well lighted room. They were supplied with plenty of food and water. The second group inhabited "Rat Disney Land." There were colorful toys, exercise wheels, and mirrors. The experimenters talked to the rats in the second group and demonstrated concern. Based on the results of previous research the researchers expected __________________.

A. The rats in the first group to exhibit depression.
B. The rats in the second group to become hyperactive and unable to focus on a task.
C. The rats in the second group to make a higher score on an intelligence test.
D. The rats in the first group to make a higher score on a test of intelligence.

I think it is a or b. I know it is not c or d.

Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you.

It is still C.

To answer this question, let's analyze the different environments the rats were raised in and what the researchers expected.

Group 1, the rats in the traditional cage, were raised in a quiet and well-lighted room. They were provided with plenty of food and water, but there was no additional stimulation or interaction.

Group 2, the rats in "Rat Disney Land," lived in an enriched environment. They had colorful toys, exercise wheels, and mirrors. The experimenters interacted with them, demonstrating concern and talking to them.

Based on this information, we can eliminate options C and D because they both suggest that the rats in Group 2 would perform better on an intelligence test. However, there is no indication in the passage that intelligence is being measured or expected to differ between the groups.

Now, let's consider options A and B. The passage does not mention depression specifically, but it does state that the rats in Group 2 were subjected to a more stimulating and socially enriched environment. This suggests that the rats in Group 1 might experience some degree of negative effect due to the absence of stimulation. Therefore, option A, the rats in the first group exhibiting depression, is a plausible expectation.

Option B, the rats in the second group becoming hyperactive and unable to focus on a task, does not have direct support in the passage. While the second group had more stimulation and interaction, there is no indication that this would lead to hyperactivity or decreased focus.

Based on our analysis, it is reasonable to conclude that the answer is A. The researchers expected the rats in the first group to exhibit depression.