Answer:
B. Pragmatics
Explanation:
The options are:
a. semantics.
b. pragmatics.
c. phonetics.
d. syntax.
From the scenario given about Sam, it can be inferred that Sam has the problem of pragmatics.
Pragmatics is a branch of linguistics that deals with the language in use and the taking of turns in conversation, etc.
Since Sam always cuts into a conversation and changes it, then he is not following the rule of conversation and thereby having the problem of pragmatics.
Pragmatics encompasses the act of speech, conversational implicature, talk in interaction and so on.
