Answer:
B. Network security means personal information is kept safe, the network is not compromised, and only authorized users have access.
Step-by-step explanation:
For a network to be secure, it means that, the network is not compromised and only authorised users have access to some of the personal informations that are kept safe on it.
For example, someone working on CIA would require high level clearance in-order to access their network due to the level of private and secure files stored in them. Such network is having secure point.