Answer:
The correct answers is A.) Assisting in Interpretation
Explanation:
Extralinguistic information are: facial expressions, tone of voice, gestures, etc... When we talk, in order to not be perceived and felt by ourselves and others as "robots", we simultaneously use extralinguistic information to interpret what we are really saying, this is the reason why Extralinguistic information helps in interpretation. Option B cannot be possible, it's the opposite, in fact. Option C, cannot be possible either as it's about providing assisting in interpretation while you speak, not by itself. And letter D. it might help to capture the attention but, this means leaving the attention from the speaker's words and only focus on their facial expression or gestures, and well, this isn't the aim either.