Consider the following statement: "if negative emotions cause aggression, and if frustration induces a negative emotion, then frustration must cause aggression." this statement illustrates which one of the following ways of knowing?

a. science
b. authority
c. common sense
d. logic

   D. Logic

Explanation:  If the conclusion of this statement were drawn from some experiment or scientific observation, then the answer would be science.

If this statement was made by someone sufficiently expert and proven qualified without some evidence, and such statement is accepted as correct then the answer would be authority.

Common sense is a common perception of certain events, situations or facts. Conclusion based on common sense does not necessarily imply a logical order of events and phenomena, since common sense can also depend on shared cultural patterns and knowledge characteristic only of a particular climate.

A conclusion made on the basis of logic, as in the case of this question, involves reasoning, and conclusion on the basis of scientifically proven facts that follow one another according to the universal pattern and principle.