Question

a massive body of salt water that makes up ¾ of the earth
lake
sea
ocean

Explanation:

Oceans are massive bodies of salt - water that cover about 71% of the Earth's surface. Lakes are generally smaller and can be fresh - water or salt - water, but they don't make up a large portion of the Earth's surface like oceans. Seas are also salt - water bodies but are often smaller and more partially enclosed compared to oceans.

Answer:

C. Ocean