Final answer:
The sentence from the passage that best illustrates Hardin's central argument is: 'The harsh ethics of the lifeboat become even harsher when we consider the reproductive differences between the rich nations and the poor nations.' This sentence highlights Hardin's central argument that the limited resources of the world cannot support the growing population, and that the differences in reproductive rates between wealthy and poor nations exacerbate this problem.
Step-by-step explanation:
The sentence from the passage that best illustrates Hardin's central argument is:
The harsh ethics of the lifeboat become even harsher when we consider the reproductive differences between the rich nations and the poor nations.
This sentence highlights Hardin's central argument that the limited resources of the world cannot support the growing population, and that the differences in reproductive rates between wealthy and poor nations exacerbate this problem.