What does nitrogen fixation accomplish? A. It allows plants to use nitrogen to grow.
B. It allows respiration to occur.
C. It allows industry to mass-produce nitrogen
D. It allows bacteria to use nitrogen to grow

A. It allows plants to use nitrogen to grow.

Explanation:

However, plants can't directly use nitrogen to grow. The bacteria need to convert atmospheric nitrogen ( N2 gas) into a form that plants can use.

Nitrogen fixation is a symbiotic relationship between plants and microorganisms of nitrogen fixers, which in the process of symbiosis perform the binding of nitrogen, which enters the earth from the air (atmosphere).

It is a reduction process of converting the gaseous form of nitrogen from the air into the ammonia form that is available to plants.

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme