Nwhat form will susan be able to capture that phosphorous as it is released from the sedimentary rock?

The correct answer is Soluble phosphorous

Soluble phosphorus is a measure of orthophosphate (PO4), the soluble and inorganic filterable fraction of phosphorus, which is the most stable type of phosphate and it is the form directly used up by the plant cells.

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.

c is the correct answer!