Answer: The Control Group is the group that doesn't stretch. ———— Explanations: When trying to identify the control group in an experiment, you must first identify what the "change" is because the group that the change applies to will be the experimental group. This experiment's change is stretching.
Using this logic...
Control Group: Non-Stretching Group Experimental Group: Stretching Group
The Harlem Renaissance was lead by many people and it was not really a one-person movement, but You can definitely mention <span>W. E. B. Du Bois as the leader or one of the leaders of the Harlem Renaissance. </span>