I already answered this for you. It's Persian messengers.
<span>This is known as a precinct convention. Attendance is open to anyone who voted in the party primary. Attendees may elect delegates for the district or county convention. They may also vote in adopting resolutions that will be forwarded along to those district or county conventions.</span>
Impeding - to delay or prevent by obstructing it/them.
so your answer is B. Obstructing; slowing down.
