Question

select the correct answer. what is the variable being tested in an experiment? a. explanatory variable b. placebo c. control variable d. response variable

Explanation:

The explanatory variable is the one being manipulated or tested in an experiment to see its effect on another variable. A placebo is a non - active substance used in control groups. A control variable is held constant to prevent it from affecting the results. The response variable is what is measured as a result of changes in the explanatory variable. Here, the variable being tested is the explanatory variable.

Answer:

A. explanatory variable