PrepTest 73, Logical Reasoning 1, Question 20
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PrepTest 141 (PrepTest 73), LR1
Summary
The essence of tackling necessary assumption questions on the LSAT involves identifying unstated premises that are crucial for the argument's conclusion to be valid.
- Necessary assumptions are vital for the argument's evidence to prove its conclusion; without them, the argument collapses.
- Understanding the argument requires discerning the conclusion and the evidence presented.
- The argument's structure often involves a cause and effect relationship, where to remedy a negative outcome, one must reverse the initial action.
- Not all solutions are mutually exclusive with their problems, but for the argument in question, the assumption is that chemical fertilizers prevent the growth of green manure, which is necessary for improving soil structure.
- The correct answer choice (E) directly addresses the assumption by stating that farmers will not grow green manure crops unless they abandon chemical fertilizers, highlighting the opposition between chemical fertilizers and green manure.
Chapters
00:00
Understanding Necessary Assumptions
00:32
Analyzing the Argument's Structure
02:09
Evaluating Answer Choices
03:53
Identifying the Correct Assumption