PLEASE HELP Can someone fill in the last one?

Scenario: the economy of country y has been in an economic downturn for the last several months. recently, businesses have invested in new technologies in order to produce the goods that consumers are demanding within the nation's own borders. the government has removed regulations to allow producers and consumers to have more financial freedom. as a result, consumer spending has increased and the economy has begun to improve. use the drop-down menus to complete the sentences. according to the information presented about country y, the classical economic concept of ( the invisible hand, consumer efficiency, government regulations) can be seen. the economic events of country y demonstrate the idea of laissez faire because the government (did, did not) intervene in economic events.

Aresearcher proposes to conduct a study at a foreign site. the research has been determined to be exempt from the federal regulations by institutional policy. according to federal regulations, is review required at the foreign site? if a proposed study qualifies for exemption, federal regulations do not require review at the foreign site where it will be conducted but still require review at the u. s. site by the institution’s irb. if a proposed study qualifies for exemption, federal regulations do not require review at the foreign site where it will be conducted. if a proposed study qualifies for exemption, federal regulations do require review at the foreign site where it will be conducted. if a proposed study qualifies for exemption, federal regulations do not require review at the foreign site where it will be conducted, but still require review by the institutional official at the local site.

The biggest component / ingredient of summer time smog is