Which earthquake severity scale varies from locality to locality for a single earthquake?

The answer is - Mercalli intensity scale.
The Mercalli intensity scale represents a seismic intensity scale which is used for the measuring of the intensity if an earthquake. It is a scale that measures the effects of an earthquake. This scale is not based on first physical principles, but is, instead, empirically based on observed effects.

Answer. first blank ; ; ; clockwise; the second blank; ///clockwise;

The answer is d) rift