Final answer:
Health is a state of optimal functioning and is determined by the individual's own body and mind.
Step-by-step explanation:
The concept of health can be accurately described as a state of optimal functioning (option 1). It is not simply the absence of illness (option 2). Health is a relative concept that can vary from optimum health to near death (option 3). It is also determined by the individual's own body and mind (option 4).