Final answer:
By 1 year, the infant's expected height would be around 40 inches (101 cm).
Step-by-step explanation:
A well-nourished, full-term newborn averages about 51 cm (20 in.) in length and has an average birth weight of 3.4 kg (7.5 lb). A healthy, well-nourished infant generally doubles its birth length by the first birthday. Therefore, by 1 year, the infant's expected height would be around 40 inches (101 cm), not one of the given options.