Their next step will be for them to hire an event planner.
- The request for proposal is used for soliciting proposals for a business. In this case, this is a convention, therefore it's not required. Also, contacting the convention and visitors bureau isn't compulsory.
- The most important thing for them to do is to contact the event planners that'll help them make the convention a fun-filled occasion and make sure that everything is properly put in place to make the convention a success.
In conclusion, the correct option is C.
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