Having a Representative Sample Is Most Important in Which of the Following

Multiple Choice

Having a representative sample is most important in which of the following example claims?

A) "Having a dark triad personality is associated with having greater relationship problems."
B) "Receiving weekly feedback from your supervisor increases work productivity."
C) "People who report knowing someone who has been diagnosed with skin cancer also report having greater sunscreen use."
D) "Forty-three percent of psychology majors report being frustrated by people asking them if they are psychoanalyzing them."