Hey M_asimuk. Congratulations in getting shortlisted for an interview.
If you haven't already done so, it's a good idea to visit their research website and read staff statements, the research lab's objectives etc in the first instance.
To give better advice it might be useful for us to know a little bit more. For example what kind of program are you applying for? Is it an established or pre-defined project of a supervisor, or are you proposing your own project? If latter, do they want you to present this too?