An independent variable is:

A. Changed to test a hypothesis.
B. Remained the same to make an experiment a fair test.
C. Collected to draw conclusions.
D. Measured to show the effect of a change.



Answer :

Final answer:

An independent variable is manipulated by the researcher in an experiment to observe its impact on the dependent variable.


Explanation:

Independent variable: The independent variable is a factor, property, or condition that is purposefully changed within an experiment by the researcher.

Dependent variable: The dependent variable is the variable whose values are presumed to change as a result of changes in the independent variable.

Example: In an experiment testing the effect of sunlight on plant growth, the amount of sunlight exposure (independent variable) is manipulated, and the plant growth (dependent variable) is measured to see the impact.


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