<span>When the speed is doubled, the Kinetic Energy is quadroupled here.
According to the relation
K.E = (mass)(velocity^2)/2</span>
The given reaction is an exothermic reaction due to the negative amount of enthalpy. In this case, an increase in temperature favors the backward reaction which points to the creation of more products. The expression of K or Q is products over reactants concentration. When this happens, Q becomes smaller then. Hence answer is C and 1.