Answer:
The correct option is C) plant
Step-by-step explanation:
The organism cannot be an animal because animals do not possess a cell wall. Hence, option A is false.
The organism cannot be bacteria because bacteria do not have membrane-bound organelles such as the nucleus. Hence, option B is false.
Plants do possess a cell wall and membrane-bound organelles. All the structures mentioned by the scientist, a cytoskeleton, mitochondrion, nucleus, cell wall, ribosomes can be seen in a plant cell. Hence, option C is correct.