Most participants reported feeling more happy than sad after rubberbands secured to the sides of their faces were stretched over the tops of their heads. Their reactions best illustrated

facial feedback hypothesis

Explanation:

Their reactions best-illustrated phenomenon known as the facial feedback hypothesis. This hypothesis states that the contractions of the facial muscles of an individual may not only communicate what a person feels to others but also to the person in question. Meaning that the individual's facial expressions can have a direct influence on the way the individual is feeling. In this scenario, the rubber bands caused the individuals to smile which in term made them feel more happy than sad.

option c

explanation:

strive for superiority

answer; the civil right act of 1964;