Here's a problem to solve: Researchers at a science laboratory have found ways to make carbon nanotubes from recycled plastic grocery bags. These nanotubes are then used as components of batteries. This approach best illustrates the ability of technology to

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

- A: increase resource availability.
 
- B: improve existing products.
 
- C: deplete available resources.
 
- D: cause environmental degradation.
 