The Advanced Level in CMMC will contain Access Control (AC) practices from:

The CMMC Model v2.0 is cumulative. The Advanced Level (Level 3) requires full implementation of NIST SP 800-171 (aligned to Level 2) and adds a subset of additional practices from NIST SP 800-172. Because levels build on one another, the Access Control (AC) practices at Level 3 inherently include those from Level 1 (basic FCI protections), Level 2 (CUI protections), and additional Level 3 requirements.

Supporting Extracts from Official Content:

CMMC Model v2.0 Overview: “The model is cumulative; practices at a higher level include the practices of all lower levels.”

Level 3 description: “Advanced… Expert Level requires implementation of NIST SP 800-171 plus a subset of NIST SP 800-172.”

Why Option D is Correct:

The Advanced Level includes all AC practices from Level 1 and Level 2, as well as the additional ones unique to Level 3.

Therefore, it contains Access Control practices from Levels 1, 2, and 3.

References (Official CMMC v2.0 Content):

CMMC Model v2.0, Overview of Levels (Cumulative nature of practices).

NIST SP 800-171 and NIST SP 800-172 (control sources for Levels 2 and 3).

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