Taffi believes that people who eat at Dairy Queen are overweight, so she decides to conduct a naturalistic observation of people who eat at Dairy Queen. What should most concern us about Taffi's observations

a) the observer effectb) the bystander effectc) observer biasd) subject b

C. Observer bias

Explanation:

We should be most concerned about the observer bias. This is because already, taffi has developed a bias about MacDonald's customers. She already has the belief that they are going to be overweight. So this is going to affect her observations. This effect is known by the name, observer bias. She may subconsciously influence the participants of this study.