What is the function of chlorophyll?

Chlorophyll plays a crucial role in photosynthesis, which is the process by which plants, algae, and some bacteria convert light energy into chemical energy. Specifically, chlorophyll is a green pigment found in the chloroplasts of plant cells and is essential for absorbing sunlight. The energy captured from sunlight by chlorophyll is then used to convert carbon dioxide and water into glucose and oxygen. This process not only provides food for the plant but also supplies oxygen to the atmosphere, which is vital for most life forms on Earth.

The other options refer to functions that are not associated with chlorophyll. Structural support is primarily provided by other components of the plant cell, such as cell walls made of cellulose. Cell division is facilitated by different structures, such as the spindle apparatus and the nucleus, rather than chlorophyll. Storage of nutrients is typically managed by specialized storage tissues or cells, like vacuoles, not by chlorophyll itself. Therefore, the key function of chlorophyll is its role in absorbing sunlight for photosynthesis, making option B the correct choice.