Answer:
The independent variable is changed to see its effect on the dependent variable while all other conditions are unchanged is the correct answer.
Step-by-step explanation:
A variable are the things that change in an experiment, such as conditions, factors, or traits that can exist. There are usually three types of them: independent, dependent, and controlled.
The independent is changed by the scientist; the dependent ones are those that receive specific attention from the scientist, who wants to see how they change. The controlled ones are those quantities that the scientist wants to remain constant.