Agymnast must be to work gracefully across a four-inch beam that is three feet in the air . which type of skills does this test? a. agility b. balancec. flexibilityd. speed

I might be wrong but balance because it did not say the width. You can go outside and walk on a curb and see how much balance you need.

The lungs are the bags that hold air as it is inhaled oxygen gas that is in the air moved into the blood-and the heart pumps to move this oxygenated blood to cells in the body that need energy