The answer is b, the only way to prove a theory true. Hope this helps :)
Chemical equilibrium is a condition where the rate of product made is same as the rate of reactant made. Since the reaction to the left is same as the reaction to the right, so the amount of reactant and product will not be changed (doesn't mean that the amount is same, it just won't increase or decrease).
It's called equilibrium since there will be no change in their amount.
Answer:What kind of milk? What are the variables on your project? (I'm assuming it's an experiment)
Explanation:
