Erika recently graduated from college with a business degree and wants to open a small boutique. however, because of her college loans, she does not have the money to purchase any products to sell in her store. which form of business organization would be most beneficial for erika to choose?

An experimenter studies the relationship between caffeine and reaction time. she designs her experiment with four groups. group 1 receives 100 mg of caffeine each in their cups of coffee, group 2 receives 200 mg of caffeine each in their cups of coffee, group 3 receives 300 mg of caffeine each in their cups of coffee, and group 4 receives no coffee. twenty minutes later, participants from all the groups are given a reaction-time test. in this experiment, which group is the control group?