Answer:c. They receive no techniques at all, but they are measured.
Options for the answer:
a. They receive no techniques, and they are not measured.
b. They receive a random technique.
c.They receive no techniques at all, but they are measured.
d. They receive the same techniques as the experimental group, and they are measured.
Step-by-step explanation:
A control group in an experiment is used as a baseline to measure and evaluate the effect that is produced in the experiment group , zero
intervention are done in the control group.