In which part of a plant would you expect to find the most chloroplasts and why

i need the answer asap and im making the question 99 points so answer

c

explanation:

i think

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