Q 29 Mr. Evans designed a study where he would test the effects of drinking Red Bull on memory For a week, he gave his participants a 16-ounce can of Red Bull to drink before playing the memory game. As the participants kept playing, the game got harder, He did the same thing the week after with the same participants but without the can of Red Bull before the game. He was able to conclude that drinking Red Bull did not significantly affect the participants memory. What is the best way to unconfound this experiment? Select one: O a. Select a more representative population Q b. Counterbalance the levels of the memory game. D a Think of a new drink to use O d. Nothing: Mi Evans and his experiment are perfect