Which one of the following is not a form of communication?

The answer is B) Reading interesting novel. Communication means a sender transmits a message and a receiver responds, with feedback closing the loop. Interview, discussion and social interaction are all two-way, interpersonal exchanges in which both parties send and receive and can respond to each other in real time.

Reading a novel is a solitary, self-directed activity. The author's text does carry meaning, but there is no immediate exchange or feedback, and the question is about forms of communication in the interpersonal sense that the examiner intends. It is best understood as recreation or intrapersonal activity.

• Interview: a structured two-way exchange of questions and answers, so it is communication.
• Discussion: multiple parties exchange views and respond to each other, so it is communication.
• Social interaction: the basic everyday exchange of verbal and non-verbal signals, so it is communication.

Core concept: the sender-message-channel-receiver-feedback model. For Mains GS IV, this links to communication skills for administrators, where feedback and two-way dialogue matter more than one-way information flow.

Trap: aspirants either reject B reflexively because a novel is written text, or pick social interaction assuming it is not communication. Test whether there is an exchange and feedback, not just whether a message exists.