Question

James took two pea plants, placing one in a dark closet and the other on a sunny window sill. Both are located in air-conditioned rooms. He then measured the growth of the pea plants after a week. In this experiment, sunlight is a(n)____________.
A. independent variable
B. dependent variable
C. constant
D. control

Answer 1

I think the correct answer from the choices listed above is option A.  In this experiment, sunlight is an  independent variable. It is the variable that cannot be changed James no matter what. Hope this answers the question. Have a nice day.

Answer 2

Answer;

A. independent variable

Explanation;

The two main variables in an experiment are the independent and dependent variable. An independent variable is the variable that is changed or controlled in a scientific experiment to test the effects on the dependent variable. A dependent variable is the variable being tested and measured in a scientific experiment.

The dependent variable is 'dependent' on the independent variable. As the experimenter changes the independent variable, the effect on the dependent variable is observed and recorded.

In this experiment, sunlight is an  independent variable. It is the variable that cannot be changed James no matter what.