What pricing strategy is usually the rule in an oligopolistic industry that a few firms dominate, which might be in the best interest of all players because it minimizes price competition?

B) price leadership

Explanation:

A price leadership strategy is set by the price leader or most important competitor in the oligopolistic market. E. g. Coca Cola is the market leader in soda markets and it sets a reference price that the rest of the industry follows.

When the market leader sets its price, the rest of the competitors will use that price as reference to set their own prices at similar or lower levels.