The Federal investigators at Stapleton Industries have failed to find any evidence
that has suggested that the unusually large contributions to its accounts are derived from government kickbacks, nor its officers guilty of improper relations with industry regulators.
(A) that has suggested that the unusually large contributions to its accounts are derived from government kickbacks, nor its officers guilty
Wrong. - "have failed" means negative --> "nor" is double negative.
- "that has suggested that" --> awkward (two "that")
(B) that suggests that the unusually large contributions to its accounts are derived from government kickbacks, or its officers guilty
Wrong. - "that has suggested that" --> awkward (two "that")
- Need "that" before "its officers" to make a parallel structure (..have failed to find X to suggest that ..... or that.......)
(C) suggesting that the unusually large contributions to its accounts had been derived from government kickbacks, with its officers guilty
Wrong.- Not parallel: evidence suggesting that..., with its.......... ==> Should be "suggesting that............or that..............."
- - Past perfect is not necessary
(D) to suggest that the unusually large contributions to its accounts are derived from government kickbacks or that its officers are guilty
Correct. Parallel: .....have failed to suggest that............ or that................
(E) to suggest that the unusually large contributions to its accounts had been derived from government kickbacks, nor were its officers guilty[/color]
Wrong. - "have failed" means negative --> "nor" is double negative.
- Past perfect is not necessary.
Hope it helps.