You didn't provide the reaction, but enzymes usually just help the reaction take place, often faster then it would in regular conditions. They are completely used up during the reaction and don't affect it in any other way, meaning they don't change the properties of the compounds.
I think it is C (meiosis)
Because they can move faster than you. And when you move your ands to the fly it looks like it’s in slow motion
Explanation:
There will be an imbalance in the food chain
