please help me answer this for my Ethics class

What concept refers to the social cost of producing one additional unit of a resource, accounting for both negative and positive externalities? aelect one: a. Intrinsic value b. Marginal social cost c. Peak production d. Hybrid approach What is the primary purpose of introducing game theory tools in this chapter? Select one: a. To provide examples of zero-sum games. b. To explain the concept of enlightened self-interest. c. To model scenarios that involve strategic social and business interactions. d. To highlight the importance of narrow self-interest. What harm can a social system that disadvantages certain groups besed on irtelevant characteristics cause? Select one: a. Economic instability. b. Political unrest. c. Material, physical, and psychological harm to its members. d. Increased market competition. What concept refers to the social cost of producing one additional unit of a resource, accounting for both negative and positive externalities? aelect one: a. Intrinsic value b. Marginal social cost c. Peak production d. Hybrid approach What is the primary purpose of introducing game theory tools in this chapter? Select one: a. To provide examples of zero-sum games. b. To explain the concept of enlightened self-interest. c. To model scenarios that involve strategic social and business interactions. d. To highlight the importance of narrow self-interest. What harm can a social system that disadvantages certain groups besed on irtelevant characteristics cause? Select one: a. Economic instability. b. Political unrest. c. Material, physical, and psychological harm to its members. d. Increased market competition