Asaturated solution of ni(oh)2 has the following equilibrium.
ni(oh)2 ni2+ + 2oh-

if naoh is added to this saturated solution, the amount of ni(oh)2 in the solution

1) increases as equilibrium shifts to the right.
2) decreases as equilibrium shifts to the right.
3) increases as equilibrium shifts to the left.
4) decreases as equilibrium shifts to the left.