The correct answer is A. intent
Gestures, facial expressions, and posture, are parts of non-verbal communication, while intent is not part of any type of communication.
The correct answer should be
<span>to lend credibility and additional support to their conclusion
Quoting famous books is usually done to support what you're saying, it's not about proving things or demonstrating it, it's rather to help make your hypothesis seem more legitimate. Highlighting your knowledge is not necessary and sounds a bit arrogant. </span>
Answer:
Possibly because if something stained the wall, then it would not come off, would be hard to get off, or will not come off for a long time.