very confused about these questions

10. The claimed benefits of public financing of professional sports arenas comes from (a) Creation of jobs. Generation of tax revenue. (c) Pride to the local area from having a professional team. (d) All of the above. 11. Empirical evidence on public financing of stadiums (a) Shows that it general does not provide the promised benefits to the local economy. (b) Has never been studied by economists. (c) Shows that the benefits are substantial. (d) None of the above. 12. The use of "odds" for sports bets (a) Is necessary to equalize the expected returns from betting on unequal teams. (b) Should be proportional to the ratio of the probabilities of winning by the two teams. (c) Serves to maintain competitive balance. (d) All of the above. 13. Which of the following is not an economic explanation for why people bet on sports (a) They have risk-preferring preferences. (b) They have risk-averse preferences. (c) Like sporting events themselves, betting provides utility due to the uncertainty of outcome. (d) Bettors think they have inside information about the odds of a team winning