The correct option is C Monera
The organisms that belong to the kingdom Monera do not have a true nucleus; hence, their DNA lies in the cytoplasm. They are the oldest living organisms known. The organisms of kingdom Monera are unicellular and can thrive in moist environments. They can be found in the snow, deep oceans, hot springs, or as parasites living on other organisms. They lack membrane-bound organelles.
All the other kingdoms in Whittakar’s classification have a proper nucleus.