Which of these statements is true about autotrophs, but not heterotrophs?
a. they use sugar and oxygen to make carbon dioxide and water
b. they use chlorophyll and oxygen to make carbon dioxide and water
c. they use sunlight, water, and carbon dioxide to make sugars
d. they use sunlight, water, and oxygen to make chlorophyll

they use sunlight, water, and carbon dioxide to make sugars - c.

emerging idea only occurs as a raw idea that could appear out of nowhere. meanwhile, to reach scientific consensus , that idea must be structured and tested over and over again through various experiments. the scientific consensus transforms the raw idea into idea that is more reliable through the process of scientific elimination.

actually the answer is c