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C. Incoherent or slurred speech and multiple schedule changes
A behavioral sign which is the greatest indicator of an abuse problem is that incoherent or slurred speech and multiple schedule changes.
What do you mean by alcohol abuse?
Alcohol abuse may be defined as a condition during which an individual may take excessive alcohol habitually.
After alcohol consumption, people show some of the behavioral signs that are extremely different from normal individuals.
These behavioral signs may include slurred speech, unbalance body, lack of sense of humor, etc.
Therefore, a behavioral sign which is the greatest indicator of an abuse problem is that incoherent or slurred speech and multiple schedule changes.
To learn more about Alcohol abuse, refer to the link:
https://brainly.com/question/5851849
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