Given a statement, generate a question such that the answer is contained in that statement.

[Q]: scales protect trout from predators and parasites
[A]: What do scales protect trout from?


[Q]: ropes are used for support by the Golden Gate Bridge
[A]: What is used to support the Golden Gate Bridge?


[Q]: Rappers also have a larynx, or voice box, to croak.
[A]:
A larynx can be heard to what?