Some people claim to be unable to perceive faces, yet scientists think that they may be able to do so unconsciously. What is the evidence for this?

a. Individuals with face blindness can guess the names that go with faces from pictures without knowing why.
b. Individuals with face blindness recognize faces but believe they are imposters.
c. Individuals with face blindness have physiological responses to familiar faces that they do not have for strangers.
d. When asked to make up names for faces, individuals with face blindness are often correct.

Answer: C

Rationale: Familiar faces tend to elicit arousal that is below the level of conscious awareness.