Final answer:
Option B accurately illustrates a tradeoff where the government's action favors environmental activists by bringing wolves back to Yellowstone, that concurrently poses risks to rancher's livestock.
Step-by-step explanation:
The best example of a tradeoff is option B: The government pleases environmental activists by reintroducing wolves to Yellowstone National Park but angers ranchers by placing their cattle in danger. In this scenario, a tradeoff is clearly depicted as the government takes an action that benefits one group while consequently imposing costs or disadvantages on another.
A tradeoff involves a situation where to gain some advantage, you have to give up another. This is evident in option B, as the environmental activists' gain, which is the reintroduction of wolves and the resulting ecological benefits, comes at the expense of ranchers who now face the risk of wolves preying on their cattle. This demonstrates the essence of a tradeoff—achieving one objective while yielding contrary outcomes for another interest.