This question tests the understanding of basic verbs related to common actions. The correct answer is 'C. Smoke' because it refers to the action of inhaling smoke from a cigarette or pipe and then exhaling it. 'A. Inspire' means to encourage or motivate, which is not related to smoking. 'B. Dispatch' means to send someone or something to a place for a purpose, which is not related to smoking. 'D. Differ' means to be unlike or to vary, which is unrelated to the act of smoking.