Final answer:
Increased absenteeism, decreased attention to detail, and mood swings are signs consistent with possible drug abuse; however, consistent punctuality is not typically an indicator. Substance abuse can affect performance and behavior, but a proper diagnosis requires a thorough evaluation by professionals.
Step-by-step explanation:
In responding to the scenario where Jessica's supervisor has noticed signs that may indicate drug abuse, it is important to distinguish between behaviors that are typically associated with drug abuse and those that are not. The signs of possible drug abuse listed include increased absenteeism, decreased attention to detail, and mood swings and erratic behavior. These symptoms are commonly associated with substance abuse as they reflect changes in an individual's performance and conduct which can be affected by drug dependence.
However, consistent punctuality is not typically indicative of drug abuse, as substance abuse would more likely lead to irregular attendance and a difficulty in maintaining schedules. Remember that each sign alone may not definitively indicate drug abuse; comprehensive evaluation by professionals is necessary for a proper diagnosis.