What is the main function of chlorophyll in plants?

Chlorophyll plays a crucial role in the process of photosynthesis, which is how plants convert light energy into chemical energy. The main function of chlorophyll is to absorb light energy from the sun, primarily in the blue and red wavelengths. This energy is then used to convert carbon dioxide and water into glucose and oxygen, forming the basis of the plant's energy supply. Without chlorophyll, plants would not be able to effectively harness light energy, making it essential for their growth and survival.

The other options relate to processes essential for plant health but do not accurately describe the primary role of chlorophyll. Regulating water loss pertains to the plant’s ability to manage transpiration, while producing sugars is a result of photosynthesis but not a direct function of chlorophyll itself. Transporting nutrients refers to the movement of minerals and water within the plant, a process that occurs via specialized tissues, unrelated to the absorption of light energy by chlorophyll.