In a test of the relationship between exercise and mood, one group of participants is subjected to a 1-hour aerobics workout in a room with windows, and a second group of participants is assigned to a room without windows to watch a video of people exercising for an hour. The researcher finds that people in the aerobics class rate themselves as happier than those in the video viewing condition. What can we conclude from the study?

That it could be exercise and the presence of windows that impacted mood.

Explanation:

According to a different source, these are the options that come with this question:

In this experiment, one group received windows and exercise, while the second one received no windows and a video. After the conclusion of the experiment, the first group appeared to be happier. As there are two different variables that changed between the two groups, it is not possible to determine with one caused the happiness. Therefore, it could both be exercise and the presence of windows that impacted mood.

the answer is b: a lockout

~kinetic ~potential

explanation:

kinetic and potential energies would be types of mechanical energies.