In their research, dr. grayson and his colleagues discovered there was a link between the number of daily hassles people experienced and psychological distress and physical ailments, such as headaches and backaches. one explanation for this phenomenon is that:

a) while each minor stressor may be relatively unimportant in itself, the effect of daily hassles can be cumulative.
b) even a minor daily hassle produces more stress than a major life event.
c) daily hassles tend to stimulate immune system responses and increase their effectiveness.
d) people who are illness-prone are more likely to experience daily hassles.