Out of the options, option C seems to be the most appropriate answer and we will find the reason for this decision.
Option C: CORRECT
In answering the question directly, it would be a yes, it would ensure the security of the records stored and ones to be stored. The reason why Mannis would get a new system is in a bid ensuring that there exists maximum guarantee that files, records archived would not be lost because of the malfunctioning, inadequate systems being presently used.

Below are the reasons why other options are wrong

option A: wrong
The statement did not accurately specify the number of users, whether few or more that is required for easier and better operation to take place. This question is not appropriately fitting in the passage description

option B: wrong
To answer the question, yes, Mannis corporation has always stored its archival records in a computerized format through an archaic, obsolete and primitive one. However, the body language of the statement does not suggest that the question is all encompassing and appropriate in the way it has been asked.

option D: wrong
The statement could be correct but it would be insufficient because it doesn't answer the question of 'how'. It was never stated nor was it inferred how possible the option of transfer ability could be achieved

option E: wrong
Yes, to answer this question. It would and could perform many more functions than the current ones but the statement is limited in content as to how and why Mannis needed a new system which is majorly for upgrade purposes