Answer: B - The best place to check for a pulse on an infant is the brachial artery located in the upper arm. The carotid and radial pulses in infants are not easy to detect.
The carotid artery and radial artery are not typically used for pulse assessment in infants because they can be challenging to detect accurately due to the infant's small size and delicate anatomy. Therefore, when evaluating an infant's pulse, healthcare professionals often rely on the brachial artery as the primary site for assessment.