Researchers in Taiwan Have Found That Contraceptive Use Is Strongly

Researchers in Taiwan have found that contraceptive use is strongly related to the number of electrical appliances (e.g.,toaster,fans,etc.) in the home.What is the best explanation for this result?

A) The researchers made a mistake and no one else would ever replicate this finding.
B) Contraceptive use causes people to purchase larger numbers of electrical appliances.
C) Having many electrical appliances causes people to use contraceptive devices.
D) A third variable,such as educational level,is associated with each and produces the observed relationship.