Use reasoning to lead to the answer of the following question:
What does a person do before going on vacation?\nOptions:\n- rest in bed\n- lie in bed\n- buy food\n- cross street\n- water plants
 Reasoning process:
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Going on a vacation means to stay away from home. People generally have plants at home. Plants need water everyday to survive. People usually water their plants before going on a vacation so they do not die until they return. Therefore, the final answer is water plants.
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