What out of these options are heterotrophs yeast Euglena paramecium

All—yeast, euglena, and paramecium—exhibit heterotrophic mode of nutrition.

Explanation:

Yeast needs to feed on subtrates (or substances) like sugars, euglena can make its food like plants do and also feeds on other food sources, while paramecium feeds on bacteria often.

I would most likely say B but im not sure.

Explanation:

When you run and you are breathing carbon dioxide is exhaling out of your body which is basically chemical energy. But like I said I could be wrong :(