I would say C Duplication since both of the DNA sequences are identical.
The role of DNA in all cells is to produce molecules of RNA that are involved in protein synthesis. Through the proteins, all the metabolism of the cell is controlled. DNA is also used to synthesize new DNA for daughter cells.
girl are you crazy?? what person is gonna do your presentation for you? do your own work this website is to have people help you not do the work for you!!!!