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matthew set up an experiment to see if a fertilizer affects the growth of bean plants. matthew watered each of the 10 bean plants in group a with 50 milliliters of a

solution of distilled water and fertilizer. he watered each of the 10 bean plants in group b with 50 milliliters of distilled water only. he watered both groups of plants

every other day for 1 month and grown under the same conditions.

the control for matthew's experiment was

group a, only

group b, only

both group a and group b

neither group a nor group b

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group B, only

Explanation:

A control in an experiment is that condition that is held the same and not of primary concern in the experiment.

Matthew wanted to test the effect of applying fertilizers on crops to the growth of beans plants.

In his set up, one can deduce that independent variable here is the fertilizer being applied. The growth of the plant depends on the effect of the fertilizer and this makes it the dependent variable.

The control in the experiment is that plant is watered using only distilled water alone.

it would be d. henry moseley

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