Which of the following makes up the largest portion of the hydrosphere? a. air b. the oceans c. the continents d. photosynthetic organisms

The answer would be the Oceans because water makes up a very large portion of the earth in general.

Hope this helps!!

the oceans makes up the largest portion of the hydrosphere because hydro means water and the oceans are big bodys of water so there for the oceans makes up the largest portion of the hydrosphere

c. movement because i took the test and it lets me review my answers