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Find the assumption the argument requires in order for its conclusion to hold.
Answers that would help the argument but aren't strictly required (sufficient, not necessary).
Negate each choice — the right one breaks the argument when negated.
The author's conclusion in the passage depends on the assumption that
The only cause of soil
7% picked this
There are terraces on farmland
Why this is right
Answer B is correct.
Skill tested: Necessary Assumption · how this choice captures the argument's function is the move to repeat next time.
73% picked this
Terraces of the kind found
11% picked this
On flat land there is
7% picked this
The only terraces in Dooney
2% picked this
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