Answer: The answer is sender-reciever or reciever-sender.
Explanation:
In this quiz, a later question asks
"Select the term with the following definition.
an individual involved in the communication process
communication
context
feedback
interpersonal communication
mass communication
noise
public communication
sender-receiver
small group communication
symbols"
As you can see, only one of these answers makes sense, revealing the answer to the other question in the same quiz.