medium · GMAT Verbal
A researcher observes that city traffic decreased by 10% after a new bike lane was installed and concludes that the bike lane caused the reduction.
Which of the following, if true, most weakens this conclusion?
- Bicycle ridership across the city rose quite sharply in the months after the new lane opened.
- The city raised the price of downtown parking by 50% at the same time the bike lane was installed.
- Traffic also decreased in several other nearby cities that did not install any new bike lanes.
- Many of the city's citizens reported in surveys that they greatly enjoy using the new bike lane.
- The bike lane ended up costing less to install than the city had originally planned and budgeted.
Sign up free to see the explanation and track your rank →
More GMAT Verbal practice
- What logical role do the first two statements play?
- Which of the following is the conclusion?
- A gardener says: 'All roses in this garden require daily wat… — What is the role of the st
- What is the conclusion?
- What is the conclusion?
- Which statement is the conclusion?
- What is the conclusion?
- What logical role does the first sentence play in the researcher's argument?