please answer

25. [4] The following methods are among the efforts used to combat moral hazard; (a) cost sharing (b) gatekeeping (c) cost-effectiveness analysis (CEA) (d) a and b (e) a, b, and c 26. [4] The legislation that makes up the "Affordable Care Act" (ACA) is: (a) The Patient Protection and Affordable Care Act (b) The Health Care and Education Reconciliation Act of 2010 (c) The Tax Cuts and Jobs Act of 2017 (d) All of the above (e) a and b 7. [4] Madrian (1994) suggests that how many U.S. workers are likely affected by "job lock:" (a) 1 million (b) 2 million (c) 5 million (d) none