What is carbon fixation? A. the reactions that take energy from glucose, together with molecules of carbon dioxide (CO2) and water (H2O), and produce ATP (adenosine triphosphate) to store the sunlights energy for later use. B. the reactions that take energy from sunlight, together with molecules of carbon dioxide (CO2) and water (H2O), and produce sugar molecules to store the sunlights energy for later use. C. the reactions that take energy from sunlight, together with molecules of oxygen (O2) and water (H2O), and produce sugar molecules to store the sunlights energy for later use.

Answer:the reactions that take energy from sunlight, together with molecules of carbon dioxide (CO2) and water (H2O), and produce sugar molecules to store the sunlights energy for later use.

Explanation:

As explained in the diagram attached, the fixation of carbon has to do with the sequence of processes that convert carbon dioxide and water to glucose and carbohydrates. This occurs during photosynthesis and the cycle is shown in the image. Via this process, energy containing molecules are produced.