The right answer is option A.In option B, the preposition
of is inappropriate.
His claims of the ability of returning is awkward. Eliminate B.
In C,
his claim of being able to return the investment changes the meaning of the sentence. What investment will he return? Has there been some stolen investment? C is illogical. Eliminate C.
his claims to be able to return is wordy in option D.
his claims to return or
his claim that he can return as in option A is more concise. Eliminate D.
In E,
his claim that he is capable of returning is wordy compared with his claim that he can return in A. Eliminate E.
We are left with option A as the right answer.
After a storied investment bank recently fired its CEO and hired an outspoken and flamboyant replacement, members of the news media centered their stories on the replacement's claims that
, based upon his past work at a private equity firm, he can return the investment bank to profitability.
(A)
that, based upon his past work at a private equity firm,
he can return the investment bank to profitability
(B)
of the ability, based upon his past work at a private equity firm,
of returning the investment bank to profitability
(C)
of being able to return, based upon his past work at a private equity firm,
the investment(D)
to be, based upon his past work at a private equity firm,
able to return the investment bank to profitability
(E) that, based upon his past work at a private equity firm,
he is capable of returning the investment bank back to profitability