What is the goal of an overall security challenge when planning a security strategy?

What is the goal of an overall security challenge when planning a security strategy?

A.
to harden all exterior-facing networks components

B.
to install firewalls at all critical points in the network

C.
to find a balance between the need to open networks to support evolving business requirements and to

D.
to educate employees to be on the lookout for suspicious behaviour

Explanation:
need to inform