The process of hardening a cement matrix through hydration with oral fluids to achieve greater mechanical strength involves the slow, progressive development of strength over time. While **setting** refers to the initial gelation and stiffening of the cement, and **hardening** is a general term for increased strength, **maturation** specifically denotes the prolonged period during which the cement undergoes chemical changes and gains full mechanical strength through continued hydration. **Mineralization** refers to the deposition of minerals like hydroxyapatite, which is part of the process but not the overall term for strength development.

✓ Correct: A. Maturation