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An experiment tests the effect of sunlight on plant growth. Group A gets 12 hours of light, Group B gets 6 hours, and Group C gets 0 hours. What is the independent variable?

The amount of sunlight. The type of plant. The height of the plants. The amount of water.

Correct Answer:

The amount of sunlight.

Explanation:

The independent variable is the one being manipulated by the researcher, which is the amount of sunlight.

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