Identify a market that you believe is "oligopolistic" or "monopolistic competition." Your text can help you with this. I choose Cell Phone companies like (at&t, Sprint, Virzon) Which is an Oligopoly Competition
Tell us why the market you selected meets the criteria of an oligopoly or monopolistic competition. Then tell us what that means for rational business price and production decisions.
Evaluate the result in (2) from perspectives of efficiency and equity drawing upon price/cost margins for your explanation. You may want to also consider issues involving the stability of collusive cartels.