The main idea of the paragraph is that e-mail
A. causes people to be unproductive when it is used incorrectly
B. has changed considerable since it first began a decade and a half ago
C. is not always the easiest way to connect people from distance office
D. is effective for certain kinds of message but only if managed wisely
সঠিক উত্তরঃ
A.
causes people to be unproductive when it is used incorrectly
