1-- Only B is correct. What is wrong with C is the word 'solely'. 2-- Wrong.
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jiangccthese days...money doesn't grow on corporate trees. You can't clamber up the corporate ladder with the attitude that each new employer is going to tack on 10% to your existing salary.
jiangccThe second answer is C.No, that is not what 'this' is. The referent for 'this' is within the quote.