Answer:
C. Plant
Explanation:
Bacteria are the prokaryotic organisms and lack a well-defined nucleus. Bacteria cells also lack membrane-bound organelles such as mitochondrion. The presence of a nucleus and mitochondrion in the examined cells represents the fact that the cell is not a bacterial cell. Animal and plant cells are eukaryotic cells and have a well-defined nucleus and other membrane-bound organelles. However, an animal cell lacks a cell wall while the plant cells have cellulosic cell walls around them. This means that the examined cells are the plant cells.