Which term means heart as a root?

• A. Card
• B. Cent
• C. Carotid
• D. Cele

Answer: (A)

The idea being tested is identifying the root that indicates the heart. The root card- (often seen as cardio- in combining form) comes from terms meaning heart, and it appears in many medical words describing heart-related concepts, such as cardiac or cardiology. The other roots point to different things: cent- is tied to the number one hundred, carotid refers to the arteries in the neck, and cele is a suffix used for hernias or protrusions. So card- is the root that means heart.