Check or stop

Which one would you pick? We will tell you if you are correct.

I would go for A. Anyway, I cannot tell the difference.

If someone stops something, it means that the something had started.
He stopped the car which was rolling down the incline.

To check something is to stop it before it has even started - checking something prevents it from starting.

So in this particular case , which do you think can replace hold back?

Does "hold back" mean that she had burst out laughing?

As a non-native speaker, I don't quite understand the meaning of the original sentence. That's why I cannot decide which to choose.

Ah, yes, it is important to understand the original sentence.

Have you ever been in a situation where it was very impolite to laugh at someone else, but they were doing something that was very funny?

As a Chinese, we are used to getting a definite answer. So I don't understand why you are going so far. What I want to know is: hold back=check?

As a teacher, we want the students to learn.
If we just give you an answer, chances are that you will not learn anything for yourself. It is only rote memorization, and you will not be able to apply this learning to other situations.

Don't you want to learn the meaning of the sentence as well as its answer?

@wangqh2696122,
With the comments already given to you by A-star, I think the sentence syntactically wasn't a well conceived one, to me anyway.
To hold back - means to restrain, which wasn't remotely similar to "stop" or "check". Stop -means to discontinue something already in process. Technically, "Hold back" means the laughter was restrained or suppressed. If you must pick one between t