I want a quick solution, please

Question 7 Not yet answered Marked out of 1.00 P Flag question In a diagram showing equilibrium of demand and supply, excess supply is found O a. All of these O b. above the equilibrium point O c. on the equilibrium point O d. below the equilibrium point Question 8 Not yet answered Marked out of 1.00 P Flag question Which of the following is a Positive statement? a. Owners of buildings should be free to charge whatever rent they want O b. Low rent will limit the supply of housing c. Low rents are good d. Housing costs too much Question 9 Not yet answered Marked out of 1.00 P Flag question Which statement describes opportunity cost? O a. The sum of total fixed costs and total costs O b. The cost of the next best alternative sacrificed O c. The cost associated with economic activity O d. The cost of self-employed resources