Lewis and Clarke brought back maps of were certain Indian tribes were which were friendly and which were aggressive the also brought sketches of animals they didn't see on the eastern side of the u.s and plants like melon etc.
Answer:
Use comparative approach
Explanation:
In simple words, one can use the relative comparison approach by testing the process on some other subject having similar characteristics. Find a comparable college that isn't participating in the program and incorporate them in some non-equivalent control group. This will conclude the effectiveness as the conclusion will be made on the basis of higher volume of population.