The answer is C. In the ribosome, the protein synthesis and then transports to the endoplasmic reticulum for further transportation. For A, it often occurs in lysosome. For B, it occurs in mitochondria. For D, it occurs in cell nucleus.
C. i promise it is i need 20 characters so yeah
it is Bacteria that the substance
The nucleus controls all of the functions of the cell, and a captain of the sports team does something similar to that too.