According to Your Textbook, the Most Important Question to Ask

According to your textbook, the most important question to ask when assessing analogical reasoning in a persuasive speech is

A) whether there are enough analogies to support the general conclusion.
B) whether the analogical principle is supported by the major premise.
C) whether the analogy avoids the fallacy of post hoc, ergo propter hoc.
D) whether the two cases being compared are essentially alike.
E) whether the analogy assumes that complex events have only a single cause.