DrWow Believes a Certain Training Program Can Increase Creativity

Multiple Choice

Dr.Wow believes a certain training program can increase creativity.She administers the program to a randomly chosen group,and not to the control group,and later evaluates the ideas from the experimental group as being more creative.What procedure would have improved this study?​

A) She should have had more people in the experimental than the control group.
B) ​She should have had a blind observer evaluate the creativity.
C) ​She should have been careful to eliminate all independent variables.
D) ​She should have let people decide whether to be in the experimental or control group.