If an earthquake occurs while a psychiatric technician is leading a group of clients to the canteen, what should she instruct the group to do?

In the event of an earthquake, it is crucial to ensure the safety of individuals, particularly in a group setting like that of a psychiatric treatment facility. Instructing the group to crouch down on the ground and cover their heads is the best course of action during an earthquake. This position protects vital areas of the body, such as the head and neck, from falling debris, which is a significant risk during seismic events.

Crouching helps to stabilize the individual's center of balance, reducing the risk of injury from being knocked over, while covering the head with arms or other objects provides additional protection. This guideline follows established safety protocols for earthquakes and is effective in minimizing injury.

The other choices are less suitable; remaining still may leave individuals vulnerable to falling objects, while running outside can expose them to greater risks from debris. Seeking shelter under a sturdy table is also a valid option, but that specific action was not chosen as the response. Nonetheless, it’s important to assess the immediate environment to determine the best available protective position when an earthquake occurs.