Which of the following is a condition for immediate detention?

Immediate detention is primarily concerned with individuals who pose a danger to themselves or others due to mental health conditions. When someone is considered mentally ill or gravely disabled, they may not have the capacity to care for themselves or could present a threat to their own safety. In such cases, immediate detention serves to ensure their protection and the safety of the community. This condition allows for intervention to provide necessary care, support, or treatment in a controlled environment.

The other options do not necessarily warrant immediate detention. Aging, by itself, does not imply a need for detention. Possession of drugs may lead to legal consequences but not typically immediate detention unless other factors are involved. Similarly, a minor driving offense is not a condition that would justify immediate detention, as it does not indicate an immediate danger to the individual or others. Thus, the emphasis on mental illness or grave disability clearly aligns with the necessity for immediate intervention through detention.