Sentence meaning (ethics of zoos): select the phrase that explains opposition to zoos Base stem: "She never visits any zoo because she is a strong opponent of the idea of …" Choose the completion that best states the objectionable idea.

Given data

• Reason for avoiding zoos: ethical opposition to an underlying idea.

Concept/Approach
Common ethical critiques of zoos focus on confinement and entertainment at the expense of animal freedom. The completion must articulate that idea explicitly.

Option analysis
holding the animals in captivity for our joy — directly names confinement for human entertainment; fits the rationale. ✅setting the animals free — the opposite of the criticized idea.watching the animals in their natural abode — that would be ethical wildlife viewing.going out of the house — irrelevant.feeding the animals while others are watching — not the core ethical concern.

Final Answer
holding the animals in captivity for our joy.