Map the given argument to help you understand its structure. Then, select which is a hidden assumption of the argument.
(1) Over 70% of residents say that traffic congestion is a major problem in our city. (2) The research group that conducted that survey has a great track record, by the way. (3) And other nearby cities that have invested in transportation have seen significant economic benefits. (4) This all shows that it would be a good idea for our city to invest in transportation.
- Other nearby cities spent significant sums to build subway systems.
- Residents' levels of concern regarding transportation are higher than their concern regarding education, public safety, or public recreation.
- If other nearby cities benefited economically from investing in transportation, our city is likely to benefit as well.
- The research group has a perfect track record on surveys regarding economic issues in particular.
