Question

In an experiment testing the effect of fertilizer on plant growth, what is the independent variable?

• A. The growth of the plants.
• B. The type of plant used.
• C. The amount of fertilizer applied to the plants.
• D. The amount of sunlight the plants receive.

Answer 1

Answer:

C. The amount of fertilizer applied to the plants.

• The amount of fertilizer is the factor that the experimenter is deliberately changing to see its effect, making it the independent variable.