Sentence Correction

rsarashi wrote:
Just wanted to know that why E is incorrect?

.

(D) executive announced plans Wednesday to cut the company's huge debt by selling nearly $12 billion in assets over the next 18 months
(E) executive announced plans Wednesday that are to cut the company's huge debt by selling nearly $12 billion in assets over the next 18 months

The Coast guard is conducting tests to see whether pigeons can be trained to help find survivors of wrecks at sea.

(A) to see whether pigeons can be trained to help find
(B) to see whether pigeons can be trained as help to find
(C) to see if pigeons can be trained for helping to find
(D) that see if pigeons are able to be trained in helping to find
(E) that see whether pigeons are able to be trained for help in finding
OA A

In the mid-1970's, since birds were overcome by pollution, and routinely falling from the sky above Los Angeles freeways, this prompted officials in California to devise a plan that reduced automobile emissions.
A. since birds were overcome by pollution, and routinely falling from the sky above Los Angeles freeways, this prompted officials in California to devise a plan that reduced
B. since birds that had been overcome by pollution were routinely falling from the sky above Los Angeles freeways, it prompted officials in California to devise a plan that would reduce
C. birds had been overcome by pollution and routinely fell from the sky above Los Angeles freeways, prompting officials in California to devise a plan that reduced
D. birds overcome by pollution routinely fell from the sky above Los Angeles freeways, prompting officials in California to devise a plan to reduce
E. birds overcome by pollution and routinely falling from the sky above Los Angeles freeways were prompting officials in California to devise a plan to reduce

OA : D