Biology

The correct answer is: A.Nucleus

The nucleus controls cell functions because it stores the cell's DNA (genetic material). The DNA contains the instructions for all of the cell's activities, including growth, reproduction, and response to environmental signals. The nucleus regulates gene expression and coordinates cell functions by controlling which proteins are made and when.

Here’s why the other options are incorrect:

B.Nucleolus: The nucleolus is a structure within the nucleus, but its primary function is to produce...