What would prevent someone from getting an attendant and asking them to open your locker?

It was more than modesty that prevented her from asking for help.

Among other things, a lockup would prevent reporters from asking questions of her staff before they had to file their stories.

This prevents us from asking the crucial question, How are we raising our boys?

What is the value of an an education which prevents you from asking the right questions?

A short time later he couldn't prevent himself from asking whether she didn't love him just a little.

He often prevents large shareholders from asking questions on conference calls.

That doesn't prevent her from asking Andrea if she can paint his portrait.

She couldn't prevent herself from asking, perhaps because some intimate part of her shared the pain without knowing the cause.

A light tap at the door prevented him from asking any further questions.