A job application letter is effective in convincing the reader that an applicant is knowledgeable of the company by?

Answer 1

What are your choices?

Answer 2

A. Good communicators advance more quickly in the company.
B. It is true that good communicators advance more rapidly in the company.
C. There is evidence that has shown that good communicators advance more rapidly in the company.
D. It is the case that good communicators advance faster in the company.

I think its D.

Answer 3

Are you sure those answers are for this question? They don't fit. The question is phrased in an incomplete sentence and needs something like a gerund phrase or something to complete it.