Feedback is

Immediate reaction of receiver
Response of receiver to communicator's message
Analysis done by the receiver of the communicator's message
None of these

The correct answer is: B. Response of receiver to communicator’s message.

Feedback is a response to a message. It can be verbal, nonverbal, or written. Feedback can be positive or negative. Positive feedback reinforces the message and encourages the sender to continue sending similar messages. Negative feedback discourages the sender from sending similar messages.

Option A is incorrect because it is not a complete definition of feedback. Feedback is not just an immediate reaction; it is also a response.

Option C is incorrect because it is not a complete definition of feedback. Feedback is not just an analysis; it is also a response.

Option D is incorrect because feedback is a response to a message.