SU Market Structure and Porters Five Forces Discussion

Can you help me understand this Economics question? What is market structure and what is Porter’s five forces?Select a monopolistic competitive firm and an oligopoly firm. Then apply Porter’s five forces and compare:1. What are the challenges to profits faced by each firm?2. Which firm is likely to have a much higher rate of return?3. What challenges to profits arise due to supply chain and intermediary consumers such as processors and distributors?