A box is against a wall. A person pushes on the box, but the box does not move. Is this situation an example of a force?

No, this is not an example of a force because a force pulls an object.
No, this is not an example of a force because a force pulls an object.

Yes, this is an example of a force because a force is a push or pull.
Yes, this is an example of a force because a force is a push or pull.

Yes, this is an example of a force because gravity is pulling the box down.
Yes, this is an example of a force because gravity is pulling the box down.

No, this is not an example of a force because the box did not move

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