Intrinsic rewards can undermine the pleasure of doing something for its own sake

A mother and a father have four children (biological not adopted). All four children have blue eyes. Assuming that brown eyes is a dominant trait and blue eyes is a recessive trait, which of the following statements must be true?

a. The parents may have brown or blue eyes, but both must have at least one allele for blue eyes. b. The parents may have brown or blue eyes, but both must have at least one allele for brown eyes. c. At least one of the parents must have blue eyes. d. Both of the parents must have blue eyes.

Egon, who lived in the Dark Ages, was receiving treatment for mental illness. Who was most likely treating him?

a) A psychiatrist. b) A monk. c) An asylum worker. d) No treatment was provided.