Final answer:
The General Theory of Relativity is the correct theory to use to describe how a satellite would move in orbit around a neutron star.
Step-by-step explanation:
The correct theory to use to describe how a satellite would move in orbit around a neutron star is the General Theory of Relativity.
General theory of relativity is a theory of gravitation that was developed by Albert Einstein. It describes the motion of objects in strong gravitational fields and incorporates the effects of spacetime curvature caused by massive objects.
Neutron stars are incredibly dense objects with strong gravitational fields, so the effects of general relativity would need to be taken into account to accurately describe the satellite's motion.