Which feature of the ocean basin is deep vast and flat with life such as shrimp and worms?

A) Abyssal plains

Explanation:

The Abyssal plains is one of the features of the Ocean basin. It is has a very large space and it is flat in shape.

The Abyssal plains have a depth that ranges from 9800ft to 20000ft which means it is quite deep.

The Abyssal plains has been found to occur largely in the Alantic Ocean. The Abyssal plains has been found to be covered with sediments such as clay and silts due to the sediments been deposited by very turbid oceanic currents

The temperature in the Abyssal plains ranges between 0 - 4°C. Living organisms such as shrimps, worms, sea urchins are inhabitants of the Abyssal plains.

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.

i believe it would be c: tons.