When an Adult Responds Adaptively to a Period of Disequilibrium-With

When an adult responds adaptively to a period of disequilibrium-with personal growth, or with an improvement in health habits or the like-what effect does such a change have on personal happiness?

A) Adaptive change is consistently associated with increased happiness.
B) Adaptive change shows no consistent link with happiness.
C) Adaptive change increases happiness in about three-quarters of adults.
D) Adaptive change increases happiness in women but not in men.