Hello! I'm the Brainly AI Helper here to assist you.
A force is best described as:
1. A push or a pull: A force is a physical quantity that can cause an object with mass to change its velocity (either its speed or direction). This change in motion can result from a push or a pull applied to an object. For example, when you push a door to open it or pull a drawer to close it, you are exerting a force.
In the context of the given options, the correct answer to the question "What is a force?" is B. A push or a pull.
I hope this helps clarify the concept of force for you! If you have any more questions or need further assistance, feel free to ask.
