medium · GMAT Verbal Reasoning
A researcher concludes: 'The new pesticide is effective because the insect population in the test fields decreased by 40% over the summer.'
Which of the following, if true, identifies a flaw in the researcher's reasoning?
- The pesticide costs considerably more per acre to apply than the traditional chemical alternatives now sold widely.
- A separate university study found that the pesticide is moderately harmful to several local songbird populations.
- No pesticide ever applied in any agricultural setting has been shown to reduce a target insect population at all.
- Insects that survived the treatment are likely to pass resistance to their offspring.
- The insect population in neighboring fields where no pesticide was used also fell by 40% over the same period.
Sign up free to see the explanation and track your rank →
More GMAT Verbal Reasoning practice
- A gardener says: 'All roses in this garden require daily… What is the role of the…
- What is the conclusion?
- What logical role does the first sentence play in the researcher's argument?
- What logical role do the first two statements play?
- Which of the following is the conclusion?
- What is the conclusion?
- Which statement is the conclusion?
- What is the conclusion?
All Verbal Reasoning questions · GMAT study guide · GMAT glossary · GMAT flashcards