Which of the Following Methods Can Plants Use to Acquire

Which of the following methods can plants use to acquire immobile nutrients (e.g., zinc) or nutrients that are not in readily accessible forms (i.e., the nitrogen in N₂) ?

A) Plants can introduce acid-like compounds into the soil.
B) Plants can form symbiotic relationships with bacteria.
C) Plants can form symbiotic relationships with fungi.
D) Plants can decompose dead plant matter in the soil to recover nutrients.