<u>Answer:</u> The correct answer is Option A.
<u>Explanation:</u>
Equilibrium is defined as the condition when the concentration of the reactants and products are constant. The ratio of their concentration remains constant, it does not vary.
The forward reaction and backward reaction occur at the same rate.
Rate of forward reaction = Rate of backward reaction
From the graph, it is clearly visible that the reaction reached equilibrium a 2.75 seconds, where the concentration of reactants and concentration of products are constant. After this point, the concentration of products starts to increase and the concentration of reactants starts to decrease.
Hence, the correct answer is Option A.
