Here's a problem to solve: An old T-shirt can be ripped into smaller pieces and used as rags. An empty milk jug can be used to water houseplants. Both of these are examples of how

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

- A: saving water conserves future resources
 
- B: using old materials can waste money
 
- C: plants need water to be healthy
 
- D: everyday materials can be reused
 