Answer the following question given this paragraph: 

The thick, rigid trunk of the oak tree on the left might crack and break in a strong wind. The slim, flexible trunk of the willow tree on the right might bend without breaking. In one way, metals are like willow trees. They can bend without breaking. That’s because metals form special bonds called metallic bonds.


Q: Metallic bonds allow metals to do what, in the manner of a willow tree?

 Choices:

- break easily

- stand tall

- grow

- bend without breaking

A:
bend without breaking
