Final answer:
Option 4 - 97 N and 87 N most likely represent the forces acting on the object.
Step-by-step explanation:
The resulting net force of -10 N indicates that the forces acting on the object are opposing each other. In this case, the forces should have magnitudes that sum up to 10 N. Therefore, option 4 - 97 N and 87 N most likely represent the forces acting on the object. The magnitudes of the forces (-97 N and -87 N) sum up to -10 N, resulting in a net force of -10 N.