Final answer:
The correct answer is A) Mitochondria.
Step-by-step explanation:
The correct answer is A) Mitochondria. Mitochondria are membranous organelles involved in cellular respiration and ATP production. They have an outer and inner membrane, as well as an intermembrane space and matrix. They are thought to have originated from symbiotic bacteria that were engulfed by ancestral eukaryotic cells.
On the other hand, chloroplasts are also membranous organelles found in plant cells that are involved in reticulumphotosynthesis. Ribosomes are small nonmembranous organelles involved in protein synthesis. The endoplasmic is a membranous organelle involved in protein and lipid synthesis. Therefore, all of these options are examples of nonmembranous organelles except for mitochondria.