Here's a problem to solve: In a laboratory procedure, a student observes different sizes of soil particles. Which tool is best for the investigation?

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

- A: a hand lens with 1X magnification
 
- B: a microscope with 40X magnification
 
- C: a light microscope with 100X magnification
 
- D: a dissecting microscope with 4X magnification
 