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Journal Writing

GMAT-EVGAKQ

A recent study concluded that writing in a journal causes weight loss.

Which of the following would be the most helpful in validating this study?

A

The sample size of the study was 20 men.

B

The participants each held doctoral degrees.

C

The researchers accounted for all erroneous variables.

D

All of the participants were left-handed.

E

The journal was about the participants' desire to lose weight.