AP English Language

The best concluding sentence is: C.By recycling, we can conserve natural resources and create a cleaner planet for future generations.

Here's why:

This sentence aligns with the topic sentence, which emphasizes recycling's positive impact on reducing waste and protecting the environment. It highlights the benefits of recycling, such as conserving resources and making the planet cleaner, which complements the topic's focus on environmental protection.

Why the other options are less suitable:

A."By recycling, we can deplete natural resources ...