Answer:
The correct answer is the nucleus.
Step-by-step explanation:
DNA replication is a complex process which involves many enzymes and the complex formed by the enzymes to make an exact copy of the DNA during cell division.
DNA replication enzymes like DNA helicase, DNA ligase, DNA topoisomerase, single-strand binding proteins and DNA polymerase are common in both prokaryotes and eukaryotes but the site of DNA replication differs in them.
The nucleus is an organelle which carries the genetic material of the cell, is a characteristic feature of eukaryotic cells which is absent in prokaryotes. So, DNA replication does not take place in the nucleus but in the cytoplasm in prokaryotes.
Thus, the nucleus is the correct answer.