Use reasoning to answer the following question.
I'm naked in the snow. I need some method of getting warm. What mightI try?\nOptions:\n- jump in a swimming pool\n- starting fire\n- pleasure\n- increase of temperature\n- feeling comfortable

starting fire
Fire is the rapid oxidation of a material in the exothermic chemical process of combustion.

An exothermic chemical process produces heat.

Heat makes us get warm.

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Final answer: starting fire