11.It is known when the receiver gives a verbal or non-verbal message.
a. answer
b. feedback
c. response
d. none given
12.It is an indication that communication really takes place.
a. when the message enters the channel
b. when the message leaves the channel
c. when the receiver understands the message
d. when the sender transmits the message
13.This is to be avoided for effective communication.
a. ambiguity
b. listening
c. politeness
d. sharing of activity