Choose the word which is different from the rest.

The answer is B. Specter.

A ball is a three-dimensional object with a round or spherical shape. A globe is a spherical model of a planet or other celestial body. A sphere is a three-dimensional figure with a perfectly round surface and no edges or corners. A specter is a ghost or apparition.

A specter is different from the other words because it is not a physical object. It is a supernatural being that is often seen as a warning or a sign of death. The other words are all physical objects that can be seen and touched.