2 is B. Products are always in the numerator, so more products means a concentration greater than 1.
3 is C. Liquids are never included in the equilibrium constant because their partial pressures and concentration cannot change. Also, the concentration in the equilibrium constant expression is always to the power of its stoichiometric coefficient.
4 is D. It will shift to the right because there are less moles on the right side of the equation