Meaning of hope to ,hope for

Need help in this question.Can anyone plz explain the every answer option?

You hope to 'verb' and you hope for 'noun'. In this sentence, hope to exchanging (noun) is incorrect grammatically and the preferred construction is to hope to exchange (verb) rather than the awkward and lengthy hope for exchanging (noun).

Between C and D, I find no problem with exchange 'for' in D. C is less concise (and awkward) and inserts a tense change (will be) that is unnecessary. D is the answer.

KW

"Exchange A for B" is also a correct form to use. You can refer to any online dictionary to validate this.

OA is D.

C is eliminated because it is not concise - '....new careers that will be new...." is redundant.

My bad! Lets not call it "OA".... lets just call it "the answer". Since the explanation you stated for the OA is faulty - "'exchange for' is wrong!", I would go for D unless a Kaplan expert on this forum can prove otherwise.

The OA on old questions can be tough because the GMAT changes over time. OAs on questions from test prep companies can be even less reliable because we are mimicking the GMAT as best we can, but we don't always get it right.

Let me say this, there is NO WAY the GMAT would have C be the correct answer 'today'. Exchange 'with' may be the technically correct idiom, but exchange 'for' is acceptable and there is virtually no meaning difference between the two forms, so that issue isn't one that the GMAT will be using for eliminations. The issues of redundancy and tense shift are solid issues that the GMAT would use to invalidate answer choice C.

For the most part, you can rely on the explanations from test prep companies. In this case, however, the OA does not represent how the GMAT will be testing you today.

KW

In addition to the "hope for + noun -- hope to + verb," advice, "hope for" is generally used to express a desire for something to happen while "hope to" is used to indicate that you intend to accomplish an action.

I hope for peace to finally reign.

I hope to increase profits this year.
I hope to score an 800 on the GMAT.

OE by KAPLAN :

C
In this sentence, the students want to do something (change careers); the proper idiom is hope to instead of hope for. So eliminate (A) and (B). The use of exchange for is incorrect in choice (D). In choice (E), something's missing; this version of the sentence doesn't specify what the "drab jobs" are being exchanged for. Choice (C) is correct.

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