In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".
I (have been advocate) moderation in daily physical exercise for nearly half a century in all my writings and books.

Options

A. have being advocating
B. has been advocating
C. have been advocating
D. no improvement

Answer

A, B, C, D