Question:
Solution:
First of all, notice the parts of the endoplasmic reticulum (the yellow organelle in the picture) are packed with ribosomes, which are temporarily attached to the outer faces of their flattened sacs. These regions are called the rough endoplasmic reticulum.
Now, the nucleolus is a region of the cell nucleus that is concerned with the production and assembly of the cells' ribosomes. So that, the correct answer is:
C.