An experiment involves exposing people to live viruses. how can this experiment demonstrate a link between stress and impaired immune function? a. stress makes a person more likely to believe they are sick, so people with high stress levels should be more likely to report getting sick b. stress makes a person less likely to volunteer for a psychological study, so the people involved in the study should be less likely to get sick c. stress strengthens the immune system, so people with high stress levels should be less likely to get sick d. stress weakens the immune system, so people with high stress levels should be more likely to get sick