For each of the following arguments,
a. Translate the argument into standard form.
b. Name the mood and figure of its standard-form translation.
c. Test its validity using a Venn diagram. If it is valid, give its traditional name.
d. If it is invalid, name the fallacy it commits.

Epidemiology is not merely the study of epidemics of infectious disease; it is the broad examination of the rates and patterns of disease in the community. By almost any standard drug abuse can be regarded as a disease; accordingly it can be profitably investigated by the methods of epidemiology.
—“Science and the Citizen,” Scientific American , February 1975