A linguistic features, such as typical language, syntax, morphology, discourse patterns in texts and their contextual usage.
B prescriptively approach, which means  they are seen as rigid classifications that determine how works should be composed.
C specific way of categorizing types of literature, used to group or organize literary works into recognizable styles, conventions, settings and themes.
D forms of social action, specifically the discoursal aspect of ways of acting and interacting in the course of social events.