tkorzhan1995
GMATNinja, please advice if I am correct:
(A) Natural resources should be used in combinations that will most greatly benefit present and future generations.-Correct
Conclusion about natural resources is made on the basis of Designating land as a wilderness.
(B) Designating a wilderness area prevents any exploitation of natural resources in that area.
(C) The present and future needs of the public would best be met by designating greater numbers of wilderness areas.
(D) The multiple-use philosophy takes into account some nonfinancial needs of the public.
(E) The multiple-use philosophy holds that the future needs of the public are more important than the present ones.
Here's a close look at the passage:
- First, the author defines a term: “'Multiple use' refers to the utilization of natural resources in combinations that will best meet the present and future needs of the public."
- Then, he/she concludes that "Designating land as a wilderness area does not necessarily violate the multiple-use philosophy."
- His/her reasoning behind that conclusion is that "even when such use does not provide the greatest dollar return, it can provide the greatest overall benefit from that site."
The question asks us for an assumption
required by the argument. In other words, which answer choice absolutely MUST be true in order for the author's argument to hold up?
Quote:
(A) Natural resources should be used in combinations that will most greatly benefit present and future generations.
(A) uses the word "should." This is a problem because we have no idea how the author feels about how the world
should be. Instead, the author talks about how the world
actually is. He/she thinks that a certain use of land doesn't violate the "multiple-use philosophy."
It's not important to the argument to establish whether the author thinks we
should use the "multiple-use philosophy" -- maybe so, or maybe he/she thinks that the best use of land is to burn it to a crisp, or mine it ASAP for nonrenewable resources, or whatever else. Regardless of what we
should do with the land, the argument holds up.
Because (A) doesn't HAVE to be true, it's not an assumption required by the argument. Eliminate (A).
Quote:
(B) Designating a wilderness area prevents any exploitation of natural resources in that area.
"Multiple-use" means that the land is used in
combinations that will best meet the present and future needs of the public. It could be that exploiting the natural resources in a certain area WOULD best meet the needs of the public. (B) tells us that we CAN'T exploit those resources in a wilderness area, which would make it
harder to argue that a wilderness area fits the "multiple-use" definition.
(B) actually weakens the argument, so it's not an assumption on which the argument depends. (B) is out.
Quote:
(C) The present and future needs of the public would best be met by designating greater numbers of wilderness areas.
The author thinks that a wilderness area qualifies under the multiple-use philosophy. However, this argument doesn't require that a
"greater number" of wilderness areas would best met the needs of the public. The argument holds up whether just one area is designated as a wilderness area, or many more are designated that way.
Eliminate (C).
Quote:
(D) The multiple-use philosophy takes into account some nonfinancial needs of the public.
To qualify under the multiple-use philosophy, a land area needs to be used in the ways that will
best meet the needs of the public. However, wilderness areas
do not provide the greatest dollar return.
So, how can a wilderness area be the
best possible use of the land if it provides a worse return than other uses would?
There must be some other factor in the equation that allows a wilderness area to still be the best use. If we were concerned
only with financial needs of the public, then there's no way that a wilderness area would best meet those needs.
For the author's argument to hold up, the multiple-use philosophy MUST include nonfinancial factors. So, (D) is an assumption required by the argument.
Quote:
(E) The multiple-use philosophy holds that the future needs of the public are more important than the present ones.
The multiple-use philosophy takes both present and future needs into account. For the argument to hold up, we don't need to compare the weight of present needs vs. the weight of future needs -- either way, a wilderness area could fit the definition.
(E) is out, and (D) is the correct answer.
I hope that helps!