Final answer:
The title that best fits an expository essay is 'Important Rules to Remember When Fixing Your Computer'.
Step-by-step explanation:
In an expository essay, the writer aims to inform, explain, or describe a certain topic. Based on the given options, the title that best fits an expository essay is "Important Rules to Remember When Fixing Your Computer". This title suggests that the essay will provide information and guidance on fixing computers, which aligns with the purpose of an expository essay.
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