A customer mumbles, avoids eye contact, and has flushed face and messy makeup. What signs of intoxication are present?

The correct answer is D. Slurred speech. The customer mumbling and having difficulty speaking clearly indicates slurred speech, which is a common sign of intoxication. This, combined with the other signs of avoiding eye contact, having a flushed face, and messy makeup, strongly suggests that the customer may be intoxicated and should be observed closely.

The other options are incorrect because: A. Loud speech is not a sign of intoxication. B. a steady gait is not related to the customer's behavior or appearance described. C. A confident demeanor is not necessarily an indicator of intoxication.