Concept:The line of latitude that divides the Earth into the Northern and Southern Hemispheres is the Equator.Explanation:The Equator is located at 0∘ latitude.It is an imaginary line that runs around the middle of the Earth from east to west.It divides the Earth into two equal halves: the Northern Hemisphere and the Southern Hemisphere.The Tropic of Cancer and the Tropic of Capricorn lie at about 23.5∘ North and 23.5∘ South respectively.The Antarctic Circle lies at about 66.5∘ South.None of these other lines splits the Earth into the two main hemispheres.Answer:C. The Equator