Sebum production begins to slow in a person's _________.

• A. Twenties
• B. Forties
• C. Thirties
• D. Fifties

Answer: (B)

Sebum production is driven by androgen hormones and tends to rise during puberty, reaching higher levels in late adolescence and early adulthood. After this peak, the activity of sebaceous glands gradually declines as hormonal patterns shift with aging. The decline typically begins in the forties, so sebum production starts to slow around that decade. That’s why this option best fits the pattern: the twenties and thirties are usually still within the higher, post-puberty range, and by the fifties the downward trend is more pronounced but the slowdown has already started in the forties.