Cleaning up a system helps clear up the space on the drives. It may also clear up processor usage, ram usage if you uninstall programs that automatically started when the system booted. You may also delete some unwanted programs in the process.
Answer: Choice A) Storing customers' package tracking information
I'm assuming we're talking about a very large company. You could use a spreadsheet, but a database is more ideal since spreadsheets bog down at a certain point when there are too many data items in it. Databases are more dynamic and allow for better scalability. The term "scalability" means it can be easily grown or shrunk depending on the needs of the client.
Choice B is false because you could use a spreadsheet to show the family's budget. The budget isn't too big and the number of items to list aren't numerous, so that's why a spreadsheet is ideal. A database would be overkill for the family's budget. The same applies to choice C and D as well. So we can rule out choices C and D also.
