Question

quincy worked in a restaurant that had a vegetable garden. part of his job was to care for the tomato plants. he had heard that pruning, or trimming, tomato plants can help tomatoes grow. he wondered if pruning would affect how well his tomato plants grew. quincy chose 24 tomato plants that were similar in size. he pruned an equal number of branches from each of the first 12 plants. he left the other 12 plants unpruned. then, each week, quincy weighed the tomatoes that he picked from each group of plants. complete the sentence. in this experiment, the pruned tomato plants were part of an experimental group a control group

Explanation:

In an experiment, control group is unchanged for comparison. Here, unpruned tomato plants are the control group.

Answer:

the unpruned tomato plants