When a system is in a chemical equilibrium, the rate at which the forward reaction occur is the same as the rate at which the reverse reaction occurs. This system is said to undergo a reversible reaction. The concentration of the reactants and products do not change, i.e are constant.
In a chemical equilibrium, the reaction continues in both directions but at the same rate.
Therefore the statement that is a misconception about a system in chemical equilibrium is 'There are equal parts reactants and products'.
This question is very simple if you really think about it. B isn't correct because kittens can eat dry food. A wouldn't be correct. Also C wouldn't be correct because it doesn't matter if you watch your kitten eat or not so the answer would be D because some kittens prefer dry food and some prefer canned food better. So it's based on how her kitten behaves.