What term describes the way to relate the motion of an object in relation to a fixed point?

The correct term that describes the way to relate the motion of an object in relation to a fixed point is a frame of reference. A frame of reference is essentially a coordinate system or a set of criteria used to measure and observe the motion of an object. For example, if you watch a bus go by while standing still, you are observing the bus's motion relative to the ground – this is your frame of reference.

In physics, establishing a frame of reference is crucial for defining the position, velocity, and acceleration of moving objects. This frame can be stationary or moving, and it provides the context needed to make sense of motion.

While "reference point" might seem similar, it is more of a specific location used to determine the position of an object within the broader frame of reference. Similarly, "point of view" generally refers to a perspective or opinion rather than a systematic way of analyzing motion. "Motion analysis," meanwhile, is a more generic term that could imply various methods of studying motion but does not specifically pertain to the relationship of motion to a fixed point. Thus, a frame of reference is the most accurate term to use in this context.