Every inductive argument is
a. based on rules, definitions, and principles
b. a comparison of two sets of events, ideas, and things
c. either invalid or unsound
d. either valid or sound

B). A comparison of two sets of events, ideas, and things.

Explanation:

An inductive argument is demonstrated as the argument that involves a set of evidences regarding something specific to reach a general conclusion that would turn true in future. Such arguments however carry probable chances of the conclusion being true or false even if the premises are true.

As per the question, every inductive argument demonstrates 'a comparison of two sets of events, ideas, and things' through specific examples in order to reach a generalized conclusion or observation which could or could not turn out to be true. Thus, option B is the correct answer.

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