You will not know the answers by osmosis. Read your text materials first. Then, if need be, type the keywords (such as "gross domestic product") into your web browser and click "search" or press "enter". No tutor here will give you the answers.
Where you have chosen an answer, #3 is correct, #8 is wrong. Hint to #8: Is a police department a public or private service? Is a store a public service (owned by the public) or a private business?