GMAT Sentence Correction (SC) | Re: A company that has greater than 50% of the market share of a

Since the author is talking about Money for Investment, treating Money as a NON COUNTABLE Noun, a Non Countable modifier "MUCH" should be used. Thus eliminating option B & D.
Option E is incorrect because of use of THEY
Option A & C are close.
Option C is incorrect since use of AND means that INVESTMENT and GENERATION are two different acts, a meaning that is contrary to original intent "GENERATING is explaining INVESTMENT"

Hence Answer A

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