An infant's length will increase by 50 percent in the first year.
Hence option (d) is correct.
Infants grow about 25 cm throughout the first year, and height at age 5 is roughly twice the length at birth.
In general, length in normal-term infants increases by about 30% by 5 months and by > 50 percent by 12 months or 1 year.
Weight: An average of 13 ounces are gained every month, with the birthweight being doubled at around 4 to 5 months and tripled at one year.
Height: Most infants grow 10 inches in their first year, with an average monthly growth of slightly over 1/2 inch.
Hence, an infant's length will increase by 50 percent in the first year.
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