Three main components of communication:

Communication is a dynamic process that involves transmitting information between a sender and a receiver. It plays a vital role in sharing ideas, emotions, and knowledge. 

Key Points The three main components of communication are source, channel, and receiver.

• Source: The origin of the message, typically the sender or communicator who creates the message.
• Channel: The medium through which the message is transmitted, such as verbal communication, written text, or non-verbal cues.
• Receiver: The person who receives the message, interprets it, and responds to it. Without a receiver, communication cannot take place.

Hence, the correct answer is source, channel, receiver.