The correct option is C If under observation through a microscope shows you chromatin network, within a well defined nucelus, then the cell must be eukaryotic.
The protoplasm is the collective name for the area including both cytoplasm and the nucleus. Bacterial cells are supposed to be some of the toughest organisms out there. They are even found in uninhabitable places like hot springs and ice caps. So the absence of a nuclear membrane is not a defining factor for their survival. Ribosomes and not the golgi apparatus is called the protein factory of the cell.