The ancient greek geographer ptolemy created a grid system and listed the for places throughout the known world in his book geography. a.. elevations. b.. altitudes. c.. coordinates. d.. meridians.

The ancient Greek geographer Ptolemy created a grid system and listed the meridians for places throughout the known world in his book Geography. The correct option among all the options that are given in the question is the last option or option "D". I hope that this is the answer that has come to your help.