Final answer:
The correct answer is D) All of the above. Successful experimental designs require randomization, replication, and control.
Step-by-step explanation:
The correct answer is D) All of the above. Successful experimental designs require randomization, replication, and control.
Randomization is the process of assigning participants or objects to different groups or treatments randomly. This helps ensure that each group is representative of the population being studied.
Replication involves repeating the experiment multiple times with different participants or objects. This helps increase the reliability and generalizability of the results.
Control refers to the use of a control group, which is a group that does not receive the experimental treatment. The control group provides a baseline for comparison and helps determine the effect of the treatment.