Final answer:
The CIA Triad defines the critical principles for creating a secure system: confidentiality, integrity, and availability.
Step-by-step explanation:
The correct answer to the provided question is A) CIA Triad. The CIA Triad is a widely-accepted security model that defines the three key principles used for developing a secure system: confidentiality, integrity, and availability. These principles ensure that information systems are protected against unauthorized access (confidentiality), undetected manipulation or alteration (integrity), and are available to authorized users when needed (availability).