Diminished alertness, forgetfulness, and confusion are considered what?

Diminished alertness, forgetfulness, and confusion are classified as signs or symptoms that may indicate impairment in an individual. In the context of recognizing impairment in the workplace, signs are observable indicators, while symptoms are subjective experiences reported by the individual. These specific conditions can signal a person's inability to function effectively or safely in a work environment, highlighting the need for further evaluation and possibly intervention. Recognizing such signs and symptoms is crucial for maintaining a safe and productive workplace.

The other options, while relevant in various contexts, do not align with the definition of diminished alertness, forgetfulness, and confusion. Leadership, teamwork, and high performance typically reflect positive traits or behaviors rather than the impairments described in the question.