suppliers will keep raising prices in a certain market as long as

Demand is high or supply is low

Explanation:

Law of supply and when demand is high supply decreases so prices increase to maintain equilibrium

Equilibrium is achieved, is the right answer.

Explanation:

The supplier will keep rising the price until the demand exceeds the supply. Alternatively, the supplier will charge the price up to the equilibrium point. However, the equilibrium point is the point which is determined by the intersection of demand and supply curve. Moreover, any price above equilibrium price will show the excess supply. Thus supplier will raise the price up to the equilibrium point.

uncle sam would be tossing and turning in his grave : *)