I believe the answer is A, because Gandalf was angry that Butterbur was delaying in bringing him news
A discourse community can be described as a group of people that share common goals, sources of information, terminology, and methods of communication along with a certain level of expertise and knowledge on a subject. However, it is often distinguished from 'speech community' on the grounds that speech communities are sociolinguistic groupings with communicative needs such as socialisation and group solidarity, whereas discourse communities are groupings based on common interests.
