Medin and coworkers conducted an experiment in which participants studied the descriptions of symptoms of people with a fictitious disease (burlosis) and later diagnosed other test cases. Their results supported the approach, because the participants were apparently basing their diagnoses on a specific example of the pattern of symptoms they observed during training.

Which of the following accounts for someone who has had regular herpesvirus-mediated cold sore or genital sore flare-ups? a) re-infection by a closely related herpesvirus of a different strainb) re-infection by the same herpesvirus strainc) copies of the herpesvirus genome permanently maintained in host nucleid) copies of the herpesvirus genome permanently maintained in host cell cytoplasm