Chloe is developing a model of photosynthesis. the first part of the model is shown below. which would be the most useful next step for chloe to develop the photosynthesis model further? a. extend the lines for sunlight so that they pass through the autotroph. b. represent a chemical reaction in the autotroph that produces high-energy carbohydrates. c. represent a chemical reaction in the autotroph that produces high-energy proteins. d. draw a circle to represent a heterotroph, and draw a line to connect it to the autotroph.