Question

You want to test a new drug that supposedly prevents sneezing in people allergic to grass. What would be a good control?

Answer 1

You need to have two groups when completing an experiment. One of them being the control group, which should have nothing changed. Whilst the test group should be given the drug and the two groups results compared. So therefore the control in this case is: a group of people with an allergy to grass on no medication and not on the new drug.