Answer:
1: Maintaining the eye contact
2: Keeping the body properly directed/aligned in his or her direction
3: Nodding the head
4: slightly bending the neck to show that you are listening carefully.
Step-by-step explanation:
Non-verbal Communication means gestures, facial expressions, tone of voice, eye contact (or lack thereof), body language, posture, and other ways people can communicate without using language.
The four cues described above will not only give a clear cue to the speaker that audience is listening actively but also improve the listener's listening skills.