B. a workout partner.
a workout partner can always help cheer you on, or motivate you!
hope i helped
Answer:
3
Explanation:
source: just trust me bro
If the bicuspid valve does not close completely, blood can flow backwards into the heart. This is regurgitation, also called aortic valve insufficiency. The heart then must pump that same blood out again, causing strain on the heart's lower left chamber, the left ventricle.
A. young - old, middle-old, and old-old
