AP® English Literature and Composition · Literary Argumentation (Big Idea LAN, Skill Category 7)
7.D Sufficient Evidence and How Much Is Enough (LAN-1.J)
Sufficient evidence means every claim in your argument has its own support, not that you've piled up a lot of quotations overall. A chain of claims is only as strong as its weakest, least-supported link.
A literary argument is usually a chain: claim one sets up claim two, which sets up claim three. Sufficiency is not a total count of quotations across the whole essay. It is a local question, asked at each link: does this specific claim have evidence backing it before the essay moves on and builds the next claim on top of it? An essay with five quotations, one or two per claim, can be fully supported. An essay with twelve quotations can still fail if they all cluster under one claim and leave the others bare.
This matters because the claims depend on each other. If claim two has no evidence, then claim three cannot actually stand, even if claim three gets four strong quotations of its own. Those quotations are holding up a step that isn't there. The break happens at the unsupported claim, and everything built on it afterward collapses with it, no matter how well that later part is argued.
Sufficiency also scales with the size of the claim. A claim about one chapter can be proven with evidence from that chapter. A claim about an entire novel needs evidence sampled from across the novel, not just its opening. Three quotations from the first three chapters of a twenty-chapter book cannot show a pattern holds for the other seventeen. This connects directly to evidence selection: you are not just choosing good quotations, you are choosing enough of them, from the right places, to match the size and shape of what you are claiming.
Key terms
- Sufficiency
- Whether a claim has enough evidence, from the right places, to actually support what it asserts.
- Line of reasoning
- A sequence of claims where each later claim depends on the ones before it being established.
- Bare claim
- A claim stated in an essay but left without any supporting evidence.
- Sampling
- Drawing evidence from multiple, representative parts of a work rather than from just one section.
Watch it explained
- How it worksHow does every claim in a line of reasoning need its own evidence before the next claim can stand?
- Worked exampleShow me an essay body where one claim carries four quotations and the next claim carries none.
- Common mistakeWhy isn't more quotation automatically stronger support?
- Going furtherWhat happens to sufficiency when your claims are about a whole novel rather than a single page?
Check yourself
End of topic.