KonanTheClubber
Answered

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What is the primary difference between an experiment and an observational
study?
A. An observational study involves many more people.
B. Observational studies always make correlations.
C. In an experiment, the researcher manipulates a variable.
D. Experiments are always done in a lab.

Sagot :

elizabethg956x

a observational study is where nothing changes and just record what you see, but an experimental study is where you have a control group and a testable group.

Hope this helps you out!

Answer:

the answer is c

Explanation:

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