Ambulatory care centers are most often used by patients who require:

Virginia Code § 38.2-3407 et seq. covers health services, where ambulatory care centers (e.g., outpatient clinics) specialize in same-day procedures like outpatient surgical procedures (option C—e.g., cataract surgery). Option A (physical therapy) may occur there but isn’t the primary use; therapy clinics differ. Option B (wellness centers) focuses on prevention, not procedures. Option D (overnight accommodations) contradicts “ambulatory,” meaning walk-in/walk-out care. The study guide likely defines this in a health facilities section, with examples like knee arthroscopy, making C the most frequent use.