In Sir Philip Sidney's An Apology for Poetry, he discusses the didactic function of poetry by comparing it to both philosophy and history (Answer 3). Sidney argues that poetry is superior to both because it can teach moral lessons more effectively.
Philosophy focuses on abstract moral principles and truth, but it often fails to engage people's emotions or imagination.
History deals with real-life examples but is limited to recounting what has already happened, which might not always offer ideal moral lessons.
Sidney claims that poetry combines the strengths of both fields: it teaches like philosophy but uses vivid, imaginative examples (like history) that make the lessons more impactful.
Thus, the correct answer is history (Answer 3) because Sidney directly compares poetry to history in this way.