Answer: The nucleus.
Explanation: In an atom, there are two main parts, the nucleus and the electron cloud/electron shells. The protons and neutrons are located in the nucleus, and the electrons are located in the electron shells/cloud/whatever.
The answer i believe is d.
hope this helps!!
A. nucleus because it is in the center of the cell and it’s the core of the cell
Answer:
mitochondria serve as the power house of a cell.
probably evolution?????????