Final answer:
The normal respiratory rate for an infant is 30 to 60 breaths per minute (option B). However, given the options presented, the closest answer is B. 25-50 breaths per minute.
Step-by-step explanation:
The question is regarding the normal respiratory rate for an infant. Infants have distinct physiological norms compared to older children and adults. The normal respiratory rate for a child under 1 year of age, which would include infants, ranges between 30 and 60 breaths per minute. As children age, their respiratory rate gradually decreases. By about 10 years of age, the rate is closer to 18 to 30 breaths per minute, and during adolescence, it falls further to an adult range of 12 to 18 breaths per minute.
Therefore, for an infant, the correct answer to the question is B. 25-50 breaths per minute. It's important to note that the given options do not include the exact range provided (30 to 60 breaths/minute), but option B is the closest to the correct range and covers a part of it.