The Director of the National Park Service stated in an interview that vegetation in the parks is seriously threatened by air pollution. Therefore, it must be the case that park vegetation is indeed threatened by air pollution, just as the Director says.
A) Deductive, valid.
B) Deductive, invalid.
C) Inductive, weak.
D) Inductive, uncogent.
E) Inductive, strong.

Question

Quizplus · Accepted Answer

The argument is inductive because it relies on the authority of the Director to support the conclusion. It is strong because the Director of the National Park Service is a credible source on the condition of park vegetation.

The Director of the National Park Service Stated in an Interview