Information preservation as one of various purposes that computer networks are used for, means backups of information are shared and stored in multiple locations for easy recovery if information is

a$.$

Lost or corrupted in the case of a system failure or as part of information recovery.

b$.$

Destroyed or corrupted in the case of a system failure or as part of information recovery.

c$.$

Lost or corrupted in the case of a network failure or as part of information recovery.

d$.$

None.