What does a chemoautotroph do?
a. make chemicals using sunlight
b. makes food molecules using sunlight
c. makes chemicals using food molecules
d. make food molecules using chemical energy

A chemoautotroph d)makes food molecules using chemical energy. The definition of a chemoautotroph or chemotroph is "an organism that obtains energy by the oxidation of electron donors in their environments." They can be either organic or inorganic molecules.