According to Diener and His Colleagues, the Fact That People's

According to Diener and his colleagues, the fact that people's happiness set point seems to be set fairly high and that people may have different set points for different domains of their life (e.g. family & work)

A) supports both genetic determination and the hedonic treadmill concept.
B) suggests that genetics do not have much to do with happiness.
C) argues against strong genetic determination and the hedonic treadmill concept.
D) suggests that evolution has favored a variety of "happiness generating activities."