Answer the following question given this paragraph: 

3.3 The Nucleus and DNA Replication The nucleus is the command center of the cell, containing the genetic instructions for all of the materials a cell will make (and thus all of its functions it can perform). The nucleus is encased within a membrane of two interconnected lipid bilayers, side-by-side. This nuclear envelope is studded with protein-lined pores that allow materials to be trafficked into and out of.


Q: What is the name of the command center of the cell?

 Choices:

- mitochondria

- molecules

- vacuole

- nucleus

A:
nucleus
