I think it's D because it's made out of facts. The other ones are more likely to include bias.
It really depends on your type of data, if it's sensitive data or not. And it also depends on what type of backup (Incremental, Decremental, etc.). But you should aim to backup at least once a week, and also do a backup of your original backup.
lst = short_names.split()
print(sorted(lst,reverse = True))
In python the input() function prompts the user to enter information.
