Answer:
Option D.
Step-by-step explanation:
Symposium-forum, is the right answer.
In symposium-forum, there are around three to four presenters and a chairperson. This format is most generally used in the events that provide opportunities to experts to propose their theory, findings, or their views about other experts' practices. In other words, the symposium is a convention or other assemblage for review of a topic, particularly one in which the members make presentations.