CIA is all about Data and access to it. I don't have a good reason for C, however I would go C by elimination of the others, B doesn't have the word data in the answer, CIA is not an vulnerability assessment, and CIA isn't a tool.

Why it isnt D?

security systems did not mean program or framework. We may not develop systems to protect our data

C is the best option given the wording. deleted the other A and B based on just being way off.

Haha soooo many people on here have zero understanding of the word "tool" A tool is ANYTHING that would assist you with the implementation. This could be training, google, a manual, a model, a concept, a standard, CISSP certification, the list goes on. Hillarious how many think the CIA triad, an intangible construct that is only in our heads, is somehow an implementation of security controls

Data security

Option C could be interpreted as implying that the confidentiality, integrity, and availability (CIA) triad refers to the implementation of security systems to protect an organization's data. While security systems are indeed employed to uphold these principles, the CIA triad itself is not a specific implementation or system but rather a foundational concept guiding security strategies. The CIA triad outlines three primary objectives essential to information security—ensuring data confidentiality, maintaining data integrity, and guaranteeing data availability. It's a principle or guideline used to shape the design, selection, and implementation of security measures and systems within an organization to protect its data and resources. Therefore, while security systems are implemented to align with the CIA triad, the triad itself represents the overarching principles rather than the specific tools or systems used for protection.

Among the given options, C best describes the CIA triad from a CISSP perspective as it highlights the implementation of security systems to safeguard and protect an organization's data.

The wording is not appropriate enough... I mean, D would be more accurate. CIA triad does not implement, it is a concept (moreless a immaterial tool to help CISOs).

A model (i.e. a sort of tool or approach) to manage security.

This is another language comprehension test. I interpreted "tool" as a metaphor for "something that helps", which could also apply to frameworks, models, etc. But obviously I was wrong. :-(

The CIA triad is widely accepted as a model "not a Tool" in information security.

agree with stickerbush1970. No other reasoning

C is the correct answer. CIA Triad is not a tool.

Given answer is correct - CIA is not a tool. It's a model used to secure systems (Protect organization's data).

It is C. The CIA triad is a common model that forms the basis for the development of security systems.

Obvious this is the answer