Here's a problem to solve: The waters off the Florida Keys are being polluted. This pollution affects the numerous marine ecosystems found in the Keys. Which action could most likely reduce water pollution?

Among the 4 following options, which is the correct answer?

- A: using compost as a fertilizer for lawns and gardens
 
- B: using water from washing machines to water lawns
 
- C: using cars that are designed to use petroleum products
 
- D: using more plastic bottles and disposing them in landfills
 