During photosynthesis, photons raise electrons to higher energy levels. These excited electrons belong to what compound?

The correct option is D - chlorophyll

The first and foremost step of photosynthesis is the excitation of chlorophyll molecules which occurs with the absorption of light. This reaction is a photochemical reaction since involves light and results in chemical change by transfer of electrons. The pigments present in the photosystems absorb photons of light. The photons excite electrons in the chlorophyll which then move through the electron transport chain and result in the production of carbohydrates and energy packets NADPH, ATP with the release of oxygen.