Consider the following statements about the control group. Which of them are correct?

1.True experiments must have a control group

2.The control group is a group of research participants who resemble the experimental group but do not receive the experimental treatment

3.The control group provides reliable baseline data to which the experimental results can be compared

AOnly 1 and 2

BOnly 2 and 3

COnly 1 and 3

DAll of the above ✓ Correct

Correct answer: (D) All of the above

Explanation

All three statements about the control group are correct.

True experiments must include a control group.

The control group resembles the experimental group but receives no treatment.

It supplies reliable baseline data for comparison.

Omitting any statement would understate the control group's role.

The comparison isolates the treatment's true effect.

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