Sediment tends to build up in the
a. continental shelf
c. abyssal plain
b. continental slope
d. oceanic ridge

The correct answer is letter C. Abyssal Plain. Sediment tends to build up in the abyssal plain. Abyssal plain covered  more than 50% of the Earth's water surface. It is an underwater plain on the deep ocean floor, located around 3000 to 6000 meter down below.

Answer (a) the itcz comes overhead for part of the year; i believe this is correct,plz check first; ///

D: sill  is what it is on edgenuity!