Scientific experiments are specially designed to test explanations for an observed phenomenon. a student decides to conduct an experiment to determine the effect that the amount of time spent in the sunlight has on the overall growth of a plant. the student will conduct the experiment using two identical plants that will only spend different amounts of time in the sunlight. all other aspects needed for growth will remain identical for each. in the experiment described, what would the amount of water given to each plant be considered? a. an observation b. a dependent variable c. an independent variable d. a control or constant

d. Control or constant

Explanation:

A control or constant is the standard or benchmark which is kept same for all the tests and untested samples. This will not have any impact over these samples.

In this given situation, the water is the control or constant. It might be kept same for both samples. But the length of time of sunlight varied.

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