Which of the following was not a geological clue used to support the theory of continental drift? a. rocks of the same composition and age were found in brazil and south africa. b. fossils of the reptile lystrosaurus were found on the landmasses of africa, india, and antarctica. c. fossils of the plant glossopteris were found on the landmasses of south america, africa, india, antarctica, and australia. d. samples of ocean water tested off the coast of south america contained the same salt content as oceans near africa. nextreset

The right option is; D. Samples of ocean water tested off the coast of South America contained the same salt content as oceans near Africa.

Continental drift is the theory that all of the earth's continents were once together and formed a large single landmass known as Pangaea but over geologic time, the continents have moved relative to one another, and across the ocean bed. "Samples of ocean water tested off the coast of South America contained the same salt content as oceans near Africa" is not a geological clue used to support the theory of continental drift because the theory only explains why the same species of organisms (plants and animals), rock components and fossil remains are found on different parts of the earth surface that are separated by large distances of sea.