Answer:
C. Having to do with money
Step-by-step explanation:
The word financial refers to money or finance. In the given paragraph, the author is suggesting that people can help rain forests by providing financial support to buy or otherwise protect rain forest areas. The author then gives an example of how small amounts of money raised by children in different countries around the world were used to buy a 42,000-acre rain forest area in Costa Rica. Therefore, the correct answer is C. having to do with money.