Answer: The correct answer is Nucleus.
Nucleus is a specialized membrane bound organelle, which is present in the cells of eukaryotic organisms.
It contains the genetic material of the living organisms, which is the DNA ( deoxyribonucleic acid). It is surrounded by two membranes, which are inner and outer nuclear membrane. These membranes form the nuclear envelope, which keeps the components of the nucleus separated from that of the cytoplasm. It also regulates the transport of molecules in and out of the nucleus.
Thus, nucleus houses DNA in the eukaryotic cells.