what is the source of energy that drives photosynthesis?\no sunlight\no hydrogen ions\no electrons\no oxygen

Answer

Brief Explanations:

Photosynthesis is a process in which plants, algae, and some bacteria use sunlight to convert carbon - dioxide and water into glucose and oxygen. Sunlight provides the energy needed to start this process. Hydrogen ions, electrons, and oxygen are involved in the process but are not the energy source.

Answer:

A. sunlight