The correct answer is C. Ribosomes.
Ribosomes are small organelles found in the cytoplasm of cells. They are responsible for the synthesis of proteins, which are essential for the structure and function of all living things.
Chromosomes are long, thread-like structures that contain the genetic material of a cell. They are not directly involved in protein synthesis.
The nucleus is the control center of the cell. It contains the cell’s DNA, which is the blueprint for protein synthesis. However, the nucleus does not actually synthesize proteins.
The cytoplasm is the jelly-like substance that fills the cell. It contains many organelles, including ribosomes, which are responsible for protein synthesis.
In conclusion, the correct answer is C. Ribosomes. Ribosomes are small organelles found in the cytoplasm of cells. They are responsible for the synthesis of proteins, which are essential for the structure and function of all living things.