Answer: (a) FOOD AND DRUG ADMINISTRATION (FDA)
Food and Drug Administration (FDA) is a federal agency of the USA that protects and promotes public health. It also looks over food safety, drug safety, etc. various laws are included in FDA such as Public Health Service Act, Federal Anti-Tampering Act, etc.
The best answer is:
C) <span>a choice that must be made due to scarcity.
A tradeoff occurs when you must choose between two or more things, selecting the best option given the constraints. Choosing what to spend your allowance on, for example, is involves a trade-off that you must make due to the scarcity of your allowance money (you don't have unlimited money). D is a tempting answer, but it does not define trade-off as well as C. </span>
Answer:
(a) Yes. It is an opportunity cost of new job because the additional time he spent commuting is a cost, as he can utilize that time in doing something else.
(b) Yes. It is also an opportunity cost because if a person wants to join a new job then he have to give up his current job. So, the earning of $45,000 from his current job is the opportunity cost of accepting the new job.
(c) No. It is not an opportunity cost but it is an additional benefit from the new job because he is not sacrificing anything to obtain this benefit.
D.) Oil and natural gas are the two major energy sources obtained from the ocean floor.
Drilling on the ocean floor has already been done and the most abundant oil and natural gas producers are North Sea, Gulf of Mexico, Atlantic Ocean (near Brazil and West Africa), Arabian Gulf, and South East Asian Seas.