John and Mary argued bitterly about which of them should have use of the family car that night. Neither realized, however, that Mary needed the car only in the early evening and that John needed it only in the late evening. John and Mary's failure to resolve their argument for their mutual benefit best illustrates the dangers of:_____.
a. superordinate goals.
b. the mere exposure effect.
c. ingroup bias.
d. a win-lose orientation.
e. GRIT.