Q: What usually causes fractures on a bone?


Read this paragraph and choose the correct option from the provided answers:

Even though they are very strong, bones can fracture , or break. Fractures can happen at different places on a bone. They are usually caused by excess bending stress on the bone. Bending stress is what causes a pencil to break if you bend it too far.

 Choices:

- compressive stress

- shear stress

- extra weight

- excessive bending stress


A:
excessive bending stress