Answer:
C. Organelles
Step-by-step explanation:
A cell is the structural and functional unit of all the living organisms. Every eukaryotic cell contains the tiny units located in the cytoplasm of a cell is called organelles. Examples of organelles are the nucleus, mitochondria, chloroplast, endoplasmic reticulum, Golgi apparatus.
These organelles are bounded by a unit membrane, they perform a specific function for the cell.
For example, the nucleus controls the activities of the cell, mitochondria works as a powerhouse of the cell, chloroplast present in green plants that performs the function of photosynthesis.