Which of the following is an indicator of appropriate behavior?

Compliance with instructions is an indicator of appropriate behavior as it reflects an individual's ability to follow guidelines and directions given by healthcare professionals or caregivers. This behavior is essential in many contexts, especially in health management, where adhering to medical advice can lead to better outcomes.

When a person complies with instructions, it demonstrates an understanding of their situation and an ability to take responsibility for their health and safety. This behavior is crucial in preventing falls and managing risks, as following preventive measures helps ensure a safer environment for the individual.

In contrast, the other choices highlight behaviors that may indicate a lack of self-care or engagement with health and social systems. Self-neglect, substance dependence, and living in isolation can create higher risks for an individual, especially regarding their physical safety and well-being. These behaviors can lead to an increased chance of falls and further health complications, which is why compliance with instructions stands out as a positive indicator.