[Q]: cause?

The bird couldn't fly.

OPTIONS:
- It migrated for the winter.
- It injured its wing.
****
[A]: It injured its wing.

[Q]: cause?

The fussy baby calmed down.

OPTIONS:
- The parents shook a rattle in front of the baby.
- The parents picked out a name for the baby.
****
[A]: The parents shook a rattle in front of the baby.

[Q]: effect?

I clenched the candy wrapper in my fist.

OPTIONS:
- The wrapper crinkled.
- The wrapper ripped.
****
[A]:
The wrapper crinkled.