Answer:
C & D
Explanation:
The cell theory states that every living organism are made of some of the smallest functional unit called the cells. The three scientist who contributed to its development are Rudolf Virchow, Theodor Schwann and Matthias Schleiden.
Cell theory says that cell is considered to be the basic unit of our lives and living things are composed of one or more than one cells. The new cells in an organism arises from the existing cells.
