Which of the following is listed as an age risk factor?

• A. Premature infant
• B. Sunbathing
• C. Industrial exposure
• D. Regular exercise

Answer: (A)

Age-related risk factors are vulnerabilities tied to life stage. A premature infant fits this because births before full term create immature organ systems and immune defenses, making them more susceptible to complications typical of neonates. Sunbathing, industrial exposure, and regular exercise do not depend on age; they reflect behavior or environment rather than the individual’s age.