Read the following premise and pick the correct choice. Then, respond with which of the choices is correct.
Premise: The man lifted the heavy box.

Choice 1: He put out his back.
Choice 2: He scratched his back.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1 (This is a common outcome when lifting heavy objects, but it's not guaranteed to happen every time.)