Answer:
Eye contact and a smile
Step-by-step explanation:
There are only two nonverbal communication options in the list you gave:
- eye contact and a smile
- pointing, frowning, and turning away
Pointing, frowning, and turning away would not be effective nonverbal communication because it seems uninviting and disrespectful. Eye contact and a smile is effective nonverbal communication because it shows that you're respectful, paying attention, and understanding.