Which situation is most likely to require crisis intervention?

Crisis intervention is typically required when an individual is experiencing a severe event that poses an immediate risk to their health or safety, particularly in the realm of mental health. In the scenario provided, a client experiencing an acute mental health crisis is in a state of emergency that necessitates immediate and effective intervention to address their urgent needs. This could include feelings of severe distress, suicidal thoughts, or any circumstances that sharply compromise their emotional well-being.

In contrast, situations such as a client needing a routine check-up, one who is stable and seeking ongoing therapy, or a client requesting information about services do not imply an immediate urgency or a critical state that requires crisis intervention. These scenarios involve routine care or information gathering, which are important but do not require the same level of immediate response and resources as a mental health crisis would. The focus of crisis intervention is specifically on individuals whose safety or mental stability is at immediate risk, making the second option the clear choice for requiring intervention.