madhujeya wrote:Although the lesser cornstalk borer is widely distributed, control of them is necessary only in the South.

(A) the lesser cornstalk borer is widely distributed, control of them is
(B) widely distributed, measures to control the lesser cornstalk borer are
(C) widely distributed, lesser cornstalk borer control is
(D) the lesser cornstalk borer is widely distributed, measures to control it are
(E) it is widely distributed, control of the lesser cornstalk borer is

A.the lesser cornstalk borer is widely distributed, control of them is [ Incorrect antecedent]
B.widely distributed, measures to control the lesser cornstalk borer are [Incorrect modification]
C. widely distributed, lesser cornstalk borer control is a tad awkward.
D. the lesser cornstalk borer is widely distributed, measures to control it are Correct
E.it is widely distributed, control of the lesser cornstalk borer is [ it looks as though the control of the lesser cornstalk borer is widely distributed, thereby changing the original meaning]

The correct answer is D

Although the lesser cornstalk borer is widely distributed, control of them is necessary only in the South.

(A) the lesser cornstalk borer is widely distributed, control of them is - pronoun is incorrect.
(B) widely distributed, measures to control the lesser cornstalk borer are - the thing that is widely distributed is the borer, not the measures.
(C) widely distributed, lesser cornstalk borer control is - the control is not the thing widely distributed.
(D) the lesser cornstalk borer is widely distributed, measures to control it are
(E) it is widely distributed, control of the lesser cornstalk borer is - it is unclear what it is - is it the control or the borer?