The options are:
A). Challenging a premise on which the proposal is based.
B). Pointing out a disagreement among policymakers.
C). Demonstrating that the proposal's implementation is not feasible.
D). Questioning the judgment of the proposal's backers by citing past cases in which they had advocated programs that have proved ineffective.
E). Disputing the assumption that a program to encourage personal savings is needed.
Answer:
A). Challenging a premise on which the proposal is based.
Step-by-step explanation:
The author critiques the suggested program of tax incentives by 'questioning the very premise on which the suggestion is based.' In the given proposal, the claim is based on the premise that if people are exempted from paying taxes on their savings accounts, they will be encouraged for saving more money. However, the author rebuts this premise by displaying the failure of such programs previously where people just attempted to redirect their money in order to get them into the tax-exempted accounts instead of saving more. Thus, the percentage of money saved by people remained unaltered. Hence, option A is the correct answer.