Question

8. When testing the benefits of a new fertilizer on the
growth of tomato plants, the control group should include
which of the following? *
O
A) Tomato plants grown in soil with no fertilizer
O
B) Tomato plants grown in soil with the original type of fertilizer
O
C) Tomato plants grown in a different type of soil with the new fertilizer
O
D) Tomato plants of different varieties grown in soil with new fertilizer

Answer 1

Answer:

A) Tomato plants grown in soil with no fertilizer

Explanation:

The control group is the group that you do not change anything. This is used as a basis or a baseline to determine whether changes you make in the experimental groups actually made a difference. An experiment is incomplete when you do not have this because it does not show any evidence that the change you made is what ellicits an effect.