Final answer:
The number of parameters in a map projection varies widely, depending on the projection type and the requirements of the map being created.
Step-by-step explanation:
The number of parameters a typical map projection possesses is d) It varies widely. Map projections can be very simple or quite complex, depending on the distortions that are being minimized and the purposes they serve. Parameters can include aspects like the point of tangency, scale factors, and the central meridian among others. The choice and number of parameters are determined by the type of projection and the specific requirements of the map.