The simple organisms may be unicellular, consisting of just 1 cell, but more complex organisms are multi-cellular, which means they might have more than one. So the answer you are looking for is A. 1
A. 1 cell Simple organisms may be unicellular, consisting of just one cell, while more complex organisms are multicellular. There are two types of cell division. Mitosis is used for growth and repair and produces diploid cells identical to each other and the parent cell.
