B you just got to read it right an that’s the answer to your question
<span>The phosphorus cycle is a biogeochemical cycle that describes the movement of phosphorus through the lithosphere, hydrosphere, and biosphere. Unlike many other biogeochemical cycles, the atmosphere does not play a significant role in the movement of phosphorus. Phosphorus mainly comes from soil and rock on the Earth and is recycled by living organisms</span>
Cell specialization is important because
-it is required for cells to perform as part of a living thing
-different cells need to do different things
The right choice would be A