Difficulty: Medium
Average Score: 80%
Simulated
An infant weighs 7 pounds at birth. What is the expected weight by 1 year of age?
Correct answer
D
Rationale
A birth weight of 7 pounds typically triples by the age of 1 year, resulting in an expected weight of 21 pounds. This significant weight gain is a normal growth pattern for infants as they usually experience rapid growth in the first year of life. Choices A, B, and C are incorrect because they do not account for the usual growth rate of an infant in the first year. Infants commonly triple their birth weight by the age of 1, making 21 pounds the expected weight.