The climax in "The Bear" occurs when 1.Smirnov challenges Popova to a duel

2.Popova brings out the pistols

3.O Popova and Smirnov kiss

4.Smirnov proposes marriage

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i believe the answer is: b. mr. head had a long, tube-like face with a rounded open jaw and a short depressed nose.

this is because in the un-revised sentence it said that mr. heads face was long and tube-like, and he had a rounded open jaw. this is not a very grammatically correct because of how it seems to drag on with the and, replaced with, with, makes it sound more fluent in the description.