Answer:
several personnel accessing the registration system
Explanation:
batch processing is all about multiprogramming so I think the first answer is the best as it is not based on one person .I know the last answer might be almost close but on a closer look it is not the answer as it is single based as written a file
D. A database is software which is designed to store massive amounts of data and organize them in such a way that information can easily be worked on (added, deleted, moved, etc...).
Surge protector :) hope this helps