Answer:
The correct answer is archaea.
Explanation:
Prokaryotes are the microscopic single-celled organism without a true nucleus or specialized cytoplasmic organelle. Prokaryotes are divided into two domains bacteria and archaea.
Archaea are single cell organisms with no distinct nucleus or membrane-bound cell organelles. They show resemblance and differences with bacteria. The main difference in them that archaea do not contain peptidoglycan in their cell wall.
Thus, the correct answer is archaea.