In a Study of Cancer, It Was Observed That Higher

Multiple Choice

In a study of cancer, it was observed that higher levels of milk consumption were positively correlated with higher incidence of cancer. Instead of claiming that higher milk consumption directly leads to higher incidence of cancer, the researcher explained that this correlation was explained by increased longevity. This is an example of

A) the third-variable problem.
B) rater to rater reliability.
C) reactive observations.
D) a judgment study.