Final answer:
A force field is a way of mapping the forces surrounding an object. If there is no way to shield Force B, it must be an unshieldable field.
Step-by-step explanation:
A force field is a concept used in physics to represent the force that surrounds an object and acts on another object without any apparent physical connection. It is a way of mapping the forces surrounding an object. For instance, the gravitational field around Earth represents the gravitational force that would be experienced by another mass placed at a given point within the field.
In the context of the question, if there is no way to shield Force B, it must be an unshieldable field. This means that the force represented by Force B cannot be blocked or protected against.