A comet is observed to have an orbit that is highly inclined relative to the orbits of the solar system planets. It MOST likely originated from

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The Oort Cloud is a distant spherical shell surrounding the solar system, filled with icy bodies and is believed to be the source of long-period comets, especially those with highly inclined orbits relative to the plane of the solar system. This characteristic distinguishes comets originating from the Oort Cloud from those coming from the Kuiper Belt, which generally have orbits lying closer to the ecliptic plane.

A Comet Is Observed to Have an Orbit That Is