阅读理解。阅读下列短文, 从给的四个选项 (A、B、C和D) 中, 选出最佳选项。
As children reach kindergarten and early grade-school age, they continue to become increasingly more aware of the wider world beyond home, school and their neighborhood. If you haven’t already done so, this can be an excellent time to teach your child about the environment, and how you can work together to go green as a family. If you’ve already introduced some eco-friendly habits in your home, here are some ways your growing child can contribute more to the greening of his world and beyond.
