Step-by-step explanation:
Phosphorus is found in form of phosphate compounds. These compounds are found in sedimentary rocks, and as the rocks weather. In fact, in marine sediment, phosphate can be present in insoluble inorganic phosphates minerals.
On the other hand, most of the phosphorus in the human body is found in the teeth and bones. Also, phosphorus can be found as part of the phospholipids that are part of the cell membranes of living beings.
Now, remember that the phosphorus cycle does not include a gaseous phase, resulting in no significant quantities of atmospheric phosphorus.
We can conclude that the correct answer is:
Answer:
A. the atmosphere