The correct answer is C. Irrelevant.
Extraneous means not relevant or not connected to the main subject. It is often used to describe information or ideas that are not necessary or helpful.
Shallow means not deep or profound. It is often used to describe people who are not intelligent or thoughtful.
Superficial means concerned with or dealing with only the surface of something. It is often used to describe people who are not interested in the true nature of something.
Nonsensical means lacking meaning or sense. It is often used to describe things that are absurd or ridiculous.
In this case, the correct answer is C. Irrelevant, because the information is not relevant to the main subject. The other options are incorrect because they do not accurately describe the information.