Assurance that the Information accessible only to those authorized to have access: a) Integrity b) Availability c) Confidentiality d) Authenticity

The concept you are referring to is primarily related to information security principles, which are commonly known as the CIA triad. Let's break down the options provided:

1. Integrity: This ensures that the information is accurate and cannot be altered by unauthorized users. It addresses the validity of the data, but does not specifically relate to access control.

2. Availability: This principle ensures that information is accessible to authorized users when needed. While it addresses access, it does not deal specifically with who can access information.

3. Confidentiality: This is the principle that directly relates to ensuring that information is accessible only to those who have the authorization to view it. It focuses on preventing unauthorized access to sensitive information.

4. Authenticity: This refers to verifying that the information is from a legitimate source and that the identities of the parties involved in the communication are confirmed. This supports the integrity and confidentiality domains but isn't directly about access control.

Conclusion:

The correct answer is c) Confidentiality, as it specifically pertains to ensuring that access to information is restricted to those who are authorized.