Verbal and nonverbal communication active listening skills refusal skills and conflict resolution skills are all elements of which of the following

Verbal skills- That requires you to speak your mind to resolve a conflict. You can use your words to practice your "refusal skills". As in saying no to drugs. 
You would hope the person would use their nonverbal skills such as active listening. That way you can fix your conflict. 

Iwould say a is correct

Keep your hands washed and trash kept in trash cans.