Which of the following describes an efficient outcome?
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a. consumers are given the widest range of choice possible.
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b. a car is designed to waste as little fuel as possible.
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c. a government program allocates food to the needy.
d. a company sets up retirement program for its employees.

B. A car is designed to waste as little fuel as possible.

Explanation:

Car makers develop car models who are fuel-efficient, it´s become a regular practice in the auto industry. Why? For two reasons. The most important reason is to appeal to consumers who want - and need - fuel-saving cars in order to save money and spend less in gas. These people want affordable and cost-saving personal transportation, they´re an important segment of the market.

The other reason is environmental consciousness. This has become part of corporations´ social responsibility and it´s part of the company´s image that impacts perception by global consumers, many of them are environmentally conscious.

to act quickly in times of danger to the united states

because you have to act quickly if you want to live/survive.