Here's a problem to solve: The end result in the process of photosynthesis is the production of sugar and oxygen. Which step signals the beginning of photosynthesis?

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

- A: Chemical energy is absorbed through the roots.
 
- B: Light energy is converted to chemical energy.
 
- C: Chlorophyll in the leaf captures light energy.
 
- D: Sunlight is converted into chlorophyll.
 