Which of the following is essentially an academic meeting?

A colloquium is essentially an academic meeting where specialists address a topic and answer questions.

An election rally is a political gathering, not an academic meeting.

A trade fair is a commercial exhibition of products, not scholarly discussion.

A board meeting is an administrative gathering of an organization's governing body.

A colloquium targets a well-educated though not necessarily specialized audience.

It differs from a seminar by featuring invited expert addresses on related topics.