The economic report released today by Congress and the Federal Reserve was bleaker than expected, which suggests that the nearing recession might be even deeper and more prolonged than even the most pessimistic analysts have predicted.
(A) which suggests that the nearing recession might be even deeper and more prolonged than even the most pessimistic analysts have predicted.
(B) which suggests that the nearing recession might be deeper and more prolonged than that predicted by even the most pessimistic analysts.
(C) suggests that the nearing recession might be even deeper and more prolonged than that predicted by even the most pessimistic analysts.
(D) suggesting that the nearing recession might be deeper and more prolonged than that predicted by even the most pessimistic analysts.
(E) a situation that is even more deep and prolonged than even the most pessimistic analysts have predicted.
Official answer = D
Source = Veritas Prep
Why the second sentence in the answer choice D started with the suggesting (- ing verb past participle)?