Final answer:
An essay is an exploration of ideas, where the author presents and develops their thoughts, opinions, or arguments on a topic.
Step-by-step explanation:
The best definition of an essay is an exploration of ideas. It is a written composition where the author expresses their thoughts, opinions, or arguments on a particular topic. An essay can be informative, persuasive, or analytical, but its main purpose is to present and develop ideas.
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