In a "true" experimental design:

Question

Quizplus · Accepted Answer

In a true experimental design, random assignment is used to control extraneous influences. This helps to ensure that the only systematic difference between groups is the manipulated variable, allowing for the establishment of a cause and effect relationship. Therefore, option C is the correct choice.

Option A refers to a literature review, not a true experimental design. Option B refers to a situation where important variables cannot be controlled, which would compromise the validity of the experiment. Option D refers to a situation where the researcher is unable to establish a cause and effect relationship, which is not the case in a true experimental design.

In a "True" Experimental Design