Which of the following absorbs light energy for photosynthesis?

Explanation

The correct answer is chlorophyll. Chlorophyll is the green pigment in chloroplasts responsible for absorbing light energy, which is vital for photosynthesis. This energy is used to split water molecules, releasing oxygen, and to convert carbon dioxide into glucose. Water molecules are involved in the light-dependent reactions but do not absorb light. Oxygen (O₂) is simply a byproduct of these reactions, with no role in light absorption. RuBP is part of the Calvin cycle, contributing to carbon fixation but not light absorption.