Issue with CR

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Issue with CR

by vardhans83 » Thu May 17, 2012 4:43 pm
Hi,

The issue i have is that I did well on the official guide CR questions. To my knowledge, I think I understood the concepts and all but I struggled with Medium to High level CR questions from the GMAT prep. I am able to narrow the answer choices down to 2 on most of them, but choosing the incorrect one and even after the explanation, I am still not convinced of the official answer.
Example:
A proposed change to federal income tax laws would eliminate deductions from taxable income for donations a taxpayer has made to charitable and educational institutions. If this change were adopted, wealthy individuals would no longer be permitted such deductions. Therefore, many charitable and educational institutions would have to reduce services, and some would have to close their doors.

The argument above assumes which of the following?

(A) Without the incentives offered by federal income tax laws, at least some wealthy individuals would not donate as much money to charitable and educational institutions as they otherwise would have.
(B) Money contributed by individuals who make their donations because of provisions in the federal tax laws provides the only source of funding for many charitable and educational institutions.
(C) The primary reason for not adopting the proposed change in the federal income tax laws cited above is to protect wealthy individuals from having to pay higher taxes.
(D) Wealthy individuals who donate money to charitable and educational institutions are the only individuals who donate money to such institutions.
(E) Income tax laws should be changed to make donations to charitable and educational institutions the only permissible deductions from taxable income.

I was able to narrow it down to A and D, but chose D. The OA is A, but i still don't understand how D is wrong and the explanation for D is not very clear.

How do I tackle these type of questions? Best source for medium to hard level CR questions for practice?

The other major issue I have is bold face questions. I understand the premise and conclusion, but I struggle with the wording in the answer choices. They are too wordy and confusing for me. Earlier, there were not too many bold face questions so I was not too worried about them, but I saw a lot of bold face questions in Question Pack 1 that is newly available on GMAT prep. Any thoughts about how to improve on this?

I appreciate any help on this! Thanks in advance
Source: — Critical Reasoning |