If an explanation for correct answer could be provided, that would be great! Which equilibrium constant indicates that the reaction will produce mostly products?

Question

a. Kc = 3.46x10-6

b. Kc = 1.96x10+7

c. Kc = 0.319

d. Kc = 0.37

Answer 1

Reactants ==> products
K = (products)/(reactants)
So a large K means more products and fewer reactants. That's the only way to get a large number for K.
A small K means fewer products and more reactants. That's the only way to get a small number for K.
So large K means the reaction is favored forward; a small K means the reactions is favored reverse.