Question

in an experiment, the variable(s) that remain the same between the control group and the experimental group are known as the
○ independent variable
○ controlled variable
○ dependent variable
○ manipulated variable

Explanation:

To solve this, we analyze each option:

• Independent variable (or manipulated variable) is the one changed in an experiment.
• Dependent variable is the one measured/affected.
• Controlled variable is kept constant between control and experimental groups to ensure a fair test.

So the variable that remains the same is the controlled variable.

Answer:

B. controlled variable (assuming the options are labeled as A: independent variable, B: controlled variable, C: dependent variable, D: manipulated variable; adjust labels as per original, but the correct option is the one with "controlled variable")