Which term is described as a flat expanse of ocean floor a) guyots b) abyssal plains c) continental shelf d) deep- sea trenches

The answer is B: abyssal plains

Abyssal plain is the term that is used described as a flat expanse of ocean floor.

Explanation: Abyssal plains refer to featureless areas on earth which are flattest, huge and sediment-covered area of the deep ocean floor. Abyssal plain are found at depths between 3,000 metres (9,800 ft) and 6,000 metres (20,000 ft).  Abyssal plains cover more than 50% of the earth surface.

for e2020. the answer would be some directions from the mountain range so we can find mt. whitney. to locate which direction is north, you should use a   compass. this would not only find mt. whitney, but also becuase of this long paragraph you would get points because it's not like anyone actually reads your work becuase once they read the first sentence it sounds dumb enough to not read becuase i'm not good at answering this but the answer is compass for your benefit.

for e2020 ; -;

answer(c) carved on a babylonian clay tablet that showed earth as a flat circular disk;