Amateur gardeners who plant based on the phases of the moon tend to get better results than those who do not. This seems surprising since the phases of the moon do not affect how plants grow. An alternative practice often found among amateur gardeners is to plant during the first warm spell of the moon are less likely to lose plants to a frost.
What this question is testing
Your task
Find the assumption the argument requires in order for its conclusion to hold.
Common trap
Answers that would help the argument but aren't strictly required (sufficient, not necessary).
Winning move
Negate each choice — the right one breaks the argument when negated.
Reading along? Open the full official question in LawHub — we show a fragment here and keep the reasoning in our own words.