Final answer:
Hand signals and non-English speaking patients are not barriers to verbal communication, but hearing impairment can be.
Step-by-step explanation:
Verbal communication barriers can include factors such as using specific terms or jargon that others may not understand, speaking unclearly or with a heavy accent, and using disrespectful or offensive language. However, hand signals and non-English speaking patients are not barriers to verbal communication, as they can be used as alternative forms of communication. Hearing impairment, on the other hand, can be a barrier to verbal communication as it hinders the ability to receive and understand spoken language.