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