PT 59 S3 Q15

There are circumstances in which it is not immoral tomake certain threats, ... ...

Which one of the following exhibits a flawed pattern of reasoning most similar to that in the argument above?
(A) There are many business events for which casual dress is appropriate, and there are many social events for which casual dress is appropriate; therefore, if an occasion is neither a business event nor a social event, casual dress is not likely to be appropriate.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Complete Section: LR-B, Dec. '09 LSAT (PT 59 Sec. 3)