Which of the following is an age-related change observed in the periodontal ligament?

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Enhanced fibroblast proliferationGreater blood vessel formationThickening of the ligamentReduction in the quantity of cementicles

Explanation

With aging, the periodontal ligament exhibits increased fibroblast activity (fibroplasia). Other changes such as increased vascularity, ligament thickening, or decreased cementicles are not typically associated with aging in this tissue.