(A) Breath amount
(B) Stroke volume
(C) Blood flow
(D) None of these
🧠 Explanation:
Stroke volume is the amount of blood the heart pumps with each beat. Imagine your heart as a pump sending water through a hose every time it squeezes. For kids, it’s like a squirt gun shooting out water each push. This helps your body get oxygen and stay strong. Learning about stroke volume teaches children how their heart works, like a superhero keeping them active. It shows why a healthy heart matters, inspiring kids to exercise and eat well. This encourages them to learn about their body, making science fun and helping them stay strong for play.
