Why is choosing a random sample an effective way to select participants? 2022 latest answers   

a. Participants do not know they are part of a study 

b. The researcher has no control over who is in the study 

c. It is larger than an ordinary sample

d. Everyone has the same chance of being part of the study

  What research method did John S. Lynd and Helen Merrell Lynd mainly use in their Middletown study?

 a. Secondary data 

b. Survey 

c. Participant observation 

d. Experiment