Since a "jargon" is defined as "special words or expressions that are used by a particular profession or group and are difficult for others to understand", I wouldn't think A. is the best answer.
Looking at B., I really doubt that getting pumped up for the workshop will help you network the most effectively.
C. seems unlikely also.
That leaves D. Doing research on the panel members and instructors is a great thing to in advance to get ready for the workshop, because it would enable you to communicate better with them and ask more insightful questions.
Hope this helps :)