Answer: The right answer is- Nucleus.
Nucleus is a membrane bound specialized organelle that is present in the eukaryotic cells ( such as plant and animal cell).
This structure possesses the genetic material (which is called DNA, deoxyribonucleic acid) of living organisms that is passed from one generation to the next generation. It contains the genetic instruction in the form of nucleotide sequences ( that are transcribed and translated to form desirable protein products). The proteins ultimately control all the functions of the cell.