If Researchers Are Interested in Whether or Not It Is

Multiple Choice

If researchers are interested in whether or not it is possible for a person to have a reaction time less than 0.05 seconds,and they simply measure the reaction times of volunteers who sign up for the study,what rationale would the researchers give for not using random sampling?

A) Sometimes generality does not matter.
B) Sometimes generality cannot be determined.
C) Sometimes generality can be determined.
D) Sometimes generality is best determined by nonrandom sampling.