Paul Ekman and Walter Friesen (1971)collected Convincing Evidence That Facial

Paul Ekman and Walter Friesen (1971) collected convincing evidence that facial expressions are universal.In their research,they studied

A) a preliterate tribe in an isolated part of New Guinea.
B) facial expressions on five different continents.
C) infants before they learned to talk.
D) blind people who smile, even though they have never seen a smile.
E) deaf culture.