By 12 months, an infant’s weight should have what change from birth?

By 12 months, an infant’s weight should have what change from birth?

• A. Doubled
• B. Tripled
• C. Quadrupled
• D. Stayed The Same

Answer: (B)

The main concept here is the expected weight milestone for a baby's first year. By about one year of age, a child typically triples their birth weight. After birth, most babies regain any initial weight lost in the first days, then gain steadily—often doubling by around 4–6 months and tripling by 12 months. Quadrupling usually happens later, around the second year, and weight staying the same would signal a problem. So, tripling the birth weight by 12 months is the typical change.

The main concept here is the expected weight milestone for a baby's first year. By about one year of age, a child typically triples their birth weight. After birth, most babies regain any initial weight lost in the first days, then gain steadily—often doubling by around 4–6 months and tripling by 12 months. Quadrupling usually happens later, around the second year, and weight staying the same would signal a problem. So, tripling the birth weight by 12 months is the typical change.