Question

Explain why it is a bad idea to have the first five subjects learn from a store clerk that the price has increased to $550, the next five learn that the price has increased to $550 from the price tag on the rug, and so on. Instead, the order in which subjects are sent to the store and which scenario they will encounter (type of change and source of information about the change) should be determined randomly. Why? (c) The order of scenario exposure to each subject should be randomly determined because Randomizing the order controls for other confounding variables such as time of day. If the order is not randomized, the first set of subjects may spread the word about price changes before the next set of subjects enters the store. Randomizing the order of the price change and source of price change information eliminates the bias of the researcher. The order of price changes needs to be randomized so that the store does not incur the impacts of the same price change all at one time.
which one of the choices are right for the first pic?

Answer 1

option C because when you randomize the selection there will, be no bias on the selection and the researchcer will not have any influence