Jessica Simpson, the Famous Pop Star Who Has Served as a Spokesman

Multiple Choice

Jessica Simpson, the famous pop star who has served as a spokesman for the anti-acne skin care product Proactiv, is an example of _____.While her claims are very impressive and persuasive, a well-designed study would provide more convincing evidence in support of this acne cure.

A) random selection
B) replication
C) a testimonial
D) personal probability