Answer:
A. Two airlines dominate air travel between City A and City B, and each airline decides whether to charge a "high" airfare or a "low" airfare on flights between those two cities.
Explanation:
<em>Option A is correct</em>
Out of all the options, the cooperative described in this option is the clearest of them and shows the perfect scenario on how the two huge players can come together to form a monopoly and oppress members of the society.
The arbitrary determination of prices by the two major airlines only benefits the airlines, and does not help the society in any way. We can thus say that it is bad for the society.
<em>Option B is not correct.</em>
The building of new weapons by the two super powers does not show a possible cooperative. The option is not also clear on how the weapons can benefit the superpowers if they "work together".
This makes option b wrong.
<em>Option C is not correct. </em>
This is because the option is not clear on how deciding to drill one or two wells benefits the companies themselves. Also, the impact of the drilling of the wells is quite vague and does not directly affect the society.
From all the options, Option A fits best in terms of clarity an appropriateness