(A) are not only skillful in developing new products but also in finding
(B) are skillful not only in developing new products but also in finding
(C) not only are skillful in developing new products, they also find
(D) not only develop new products, but they are also skillful in finding
(E) are both skillful in the development of new products and in finding
Solution:
Idioms + Parallelism
Not only X but also Y is the correct idiom. X and Y must be parallel.
A: skillful and finding are not parallel.
C: but is missing. Unidiomatic.
D: not only develop(verb) but they are also skilful(adjective). Parallelism violated.
E: skilful and finding are not parallel.
B: Parallel and idiomatic. Best choice.
Sentence Correction - 1000 Questions with Solution: