Answer: D. Bacteria.
Explanation: Which of these organisms are not Eukaryotes is D. Bacteria because it's a prokaryote cause it doesn't have a true membrane bound nucleus as the other answer choices: A. Yeast, B. Algae, and C. Fungi which are eukaryotes do that's why they are the incorrect answer choices and you shouldn't choose them. So that's why D. Bacteria is the only correct answer choice that you should choose.
