The correct answer is B. It is made up of eukaryotic cells.
Step-by-step explanation:
The organism on the left half of this photograph is a mushroom that belongs to the fungi kingdom. This organism is multicellular because it is composed of multiple cells, that is why it can be observed without using a microscope or similar instrument. Besides this, this organism contains only eukaryotic cells; this implies, each of the cells in this mushroom contains a membrane-enclosed nucleus and within this nucleus, there is genetic information. According to the above, the most accurate description of the organism in the photograph is it is made up of eukaryotic cells.