The teacher told the choir that they might faint and fall if they locked their knees while what?\nOptions:\n- getting hurt\n- ocean\n- stand up\n- standing\n- summer
Let's think carefully first. Step-by-step reasoning process:
User
Locking the knees while standing can indeed lead to fainting as it hinders the flow of blood to the brain. Fainting makes you fall generally. Singers who takes part in church services has to stand for long for singing. So the final answer is standing.
Assistant