Answer:
D. An anatomical chart
Step-by-step explanation:
An "anatomical chart" shows the anatomy of the human body. It could show a specific body part, organs, tissues and so on. If the physician would like to explain to his patient how the human eye works, then it is best to use this kind of chart. The chart will show the patient the different parts of the human eye, their individual functions and how they work together.
This kind of chart is often used in the field of medicine or other healthcare-related fields. Examples of anatomical charts: Lung Chart, Urinary System Chart, Heart Chart, Female Anatomy Chart, Joint Chart, etc.