How often does a 16-year-old need a medical evaluation from a doctor?
a. once every 6 months
b. once every 3 years
c. once every 1 year
d. once every 2 years

The correct answer is option D. once every two years.

Explanation:

The frequency of visiting healthcare evaluation or medical evaluation from a doctor depends on the health situation and the age of an individual. A normal 16-year-old individual should visit the doctor for medical evaluation every two years.

If any individual no medical condition than that individual should visit the doctor to prevent and diagnose if there is any underlying disease.

Thus, the correct answer is option D. once every two years.