They could be considered a Germaphobe. Someone who has Mysophobia and could be connected with Obsessive Compulsive Disorder (OCD)
I believe the answer is:<span>They are ensuring that all information is understood.
In communication, verbal cues refers to the words that is directly spoken by the communicator. The combination between both verbal and non-verbal cues will increase the likelihood of that the full context of a message would be understood.</span>