To determine which option most effectively weakens the reasoning of the argument, we need to identify the argument's central claim and then find evidence that undermines its logic. The argument suggests that state tax revenues are threatened because companies are relocating and deducting limousine expenses, thereby paying lower taxes. To weaken this, we need to show that the tax revenue is not actually diminished or is compensated by other means.
Let's evaluate each option:
(A) Higher personnel transport costs are offset by other savings at the new corporate headquarters.
This option suggests that while transport costs may increase, other savings at the new headquarters may balance out or even exceed these costs. However, the argument focuses on the specific deduction related to limousine expenses, so this option does not directly address the impact of deductible expenses on tax revenues.
(B) Tax revenues lost from corporations leaving the state will exceed those gained if company vehicle purchases are restricted.
This option suggests that restricting vehicle purchases would not solve the problem because the tax revenue loss from companies leaving the state is greater than any gain from limiting deductions. This does not directly address the argument's focus on deductions from limousine purchases, but rather highlights a broader tax revenue issue. It does not effectively weaken the argument's reasoning regarding deductions.
(C) Increased taxes are paid by the state's automobile manufacturers as a result of rising demand for limousines.
This option introduces a new source of tax revenue: the increased demand for limousines boosts the state's automobile manufacturers' tax contributions. If the increased tax from manufacturers compensates for the loss from corporate deductions, the argument's claim that tax revenues are seriously threatened is weakened. Therefore, this option effectively weakens the argument.
(D) Business executives prefer the convenience of commuting in a well-equipped limousine with a driver.
This option merely provides a reason for executives choosing limousines; it does not address the issue of tax deductions or revenue loss for the state.
(E) Corporate relocations to suburbs cause cities numerous economic difficulties.
This option shifts focus to general economic issues for cities rather than addressing the specific tax revenue issue due to deductions. It does not weaken the argument about corporate income tax revenues.
Therefore, the correct answer is (C) because it provides an alternative source of tax revenue that offsets the loss from limousine-related deductions.