LSAT Sufficient Assumption Questions, Explained
Sufficient assumption questions ask: which answer, if added to the evidence, would make the conclusion follow for sure? You're looking for the missing piece that closes the gap completely — 100%, no daylight left.
How to approach them
- Find the conclusion, the evidence, and the exact gap.
- Look for the answer that bridges the gap entirely. Combined with the evidence, the conclusion should be inescapable.
- These answers often feel "too strong" — that's the point. Sufficient means enough to guarantee the conclusion.
- Test it: evidence + this answer → must the conclusion be true? If yes, you've got it.
The trap to watch for
Necessary assumptions are the trap in reverse. An answer the argument needs but that doesn't fully close the gap isn't sufficient. Sufficient is a higher bar — demand the full bridge.
Know your starting point
Take the free diagnostic — you'll see exactly which question types are costing you points, including sufficient assumption.