Identify the most appropriate option to improve the underlined segment. If no improvement is required, select "No improvement".
As we've been neighbours, I have known Mrs. Shashi Singh since more than 16 years.

Options

A. No improvement
B. from more than 16 years
C. by more than 16 years
D. for more than 16 years

Answer

D

Explanation

Since - point of time for - period of time. So "As we.ve been neighbours, I have known Mrs. Shashi Singh for more than 16 years" will be the correct answer because 16 years is period of time and not the point of time.