Read the following narrative prompt: Write an essay about the ethics of keeping animals in zoos.

Which of the choices below is the best implied thesis statement for the prompt?

O Many people say that zoos are important but others disagree.

O Zoos are immoral because entertaining and even educating humans does not justify imprisoning animals in unnatural environments.

O I think zoos are creepy.

o Zoos have changed from a collection of small, bare cages to spacious enclosures that mimic natural habitats