Use the following information for the next two questions. The school IT administrator is interested in looking at the results of a new training program that educates the staff in identifying suspicious e-mails. The study saw that 54 employees had voluntarily completed the training program, and 46 employees had not yet completed the training program. The administrator sent all 100 employees a suspicious e-mail with a suspicious link, and recorded the information for each variable listed below. Explain to the IT administrator why it may be unwise to conclude a cause-and-effect relationship for this type of study by identifying one possible lurking or confounding variable AND how it could lead to the same results. (Any answer with a well-defended explanation will receive full credit.)