Question

Suppose you are investigating how the day ends hamsters affect how much they run on the hamster wheel. In order to control the experiment which of these should you do?
A. Change only the diet of each hampster.

B. Give all the hamsters the exact same diet.

C. Only allow some hampsters to run on the wheel.

D. Compare the behavior of hamsters and gerbils

Answer 1

Answer:

B

Explanation:

If you want to control the experiment, you want to make sure that no outside factor could potentially influence your results.

Hence, changing the diet of a hamster would significantly alter any results you may collect.

For example, if you allow hamster A to eat a nutritious diet, while not giving a proper diet to hamster B. Hamster A will perform better, and run further and for longer, because he has more energy.

The answer is B, because you want to make sure no hamster is at an advantage.

Answer 2

The answer is C because you need non running hamsters to compare running hamsters with.