Citizen: Our legislators need to act quickly to counter the effects of the recession, especially the present level of unemployment, which is the highest ever.
Conclusion
We urgently need a major tax cut for our upper-income citizens.
Evidence
The present level of unemployment is the highest ever due to the recession.
A major tax cut for upper-income citizens would lead to a large increase in investment, thereby creating new jobs.
Without this measure, investment will not grow.
Evaluate
The citizen is arguing for a specific solution to counter the effects of the recession, namely by proposing a tax cut. The premise that connects this solution to the desired effect (job creation) is that if upper-income citizens receive tax cuts, they will invest the extra money, thus creating new jobs.
For this argument to hold, the citizen is assuming that tax cuts for upper-income citizens will directly lead to increased investment. Put another way, the citizen assumes that the money saved from taxes will be used in a way that stimulates economic activity.
A potential objection could be that upper-income citizens might choose to save the extra money or spend it on non-investment ventures, which wouldn't create jobs. Therefore, for the citizen's argument to stand, there must be an assumed link between the tax cuts and increased investment.
Goal
We need to identify an assumption that explicitly links tax cuts for upper-income earners to increased investment. An answer choice that confirms the reasoning that tax cuts will result in the behavior needed to support job growth (i.e., investing) is crucial.