The given question is incomplete. The complete question is given here :
The equilibrium constant for the reaction is
M.

This value indicates that
A.
is a stronger base than 
B. HCN is a stronger acid than HONO
C. The conjugate base of HONO is 
D. The conjugate acid of CN- is HCN
Answer: A.
is a stronger base than 
Explanation:
Equilibrium constant is the ratio of product of the concentration of products to the product of concentration of reactants.
When
; the reaction is product favoured.
When
; the reaction is reactant favored.
; the reaction is in equilibrium.
As,
, the reaction will be product favoured and as it is a acid base reaction where
acts as acid by donating
ions and
acts as base by accepting 
Thus
is a strong acid thus
will be a weak conjugate base and
is a strong base which has weak
conjugate acid.
Thus the high value of K indicates that
is a stronger base than 