Yes, I believe there is a correct answer: the one that any person gives.
I define the term “healthy” much broader, making it thus even more confusing. I believe that ‘being healthy’ is more a state of mind than of body. I have a client with MS who describes herself as healthy. And I wholeheartedly agree.
About 20 years ago, I was in the hospital with pneumonia. It was one of those nasty bugs that came out of nowhere. I had been fighting fit one day and was in a hospital bed the next. Yet, I would broadcast (as soon as I had my wits about me again) to all the nurses that I was the healthiest person in their hospital.