Read the excerpt from dr. martin luther king’s “letter from birmingham “

if i sought to answer all the criticisms that cross my desk, my secretaries would have little time for anything other than such correspondence in the course of the day, and i would have no time for constructive work.

what is the authors purpose for including this sentence?

to emphasize the productivity of his daily routine

to undermine the significance of his critics letter

to establish the impressive credentials of his staff

to explain the nature of his profession