Context Variables Timothy Is a Shy Undergraduate Who Was Pressured

Multiple Choice

Context Variables Timothy is a shy undergraduate who was pressured by his roommate to help run a field experiment where he had to ask mall shoppers a large or small favor.Since he found most subjects intimidating, he only approached grandmothers and stray children in the large favor condition, and impatient shoppers in the small favor condition.Timothy's behavior

A) confounded the experiment.
B) illustrated the Rosenthal effect.
C) introduced a demand characteristic.
D) was ethically inappropriate.