Final answer:
A routine CBC from a healthy 10-month-old infant can be collected using a capillary stick site, such as the finger, earlobe, or heel.
Step-by-step explanation:
A phlebotomist should select a capillary stick site for collecting a routine CBC from a healthy 10-month-old infant. Capillary stick is performed on a finger, an earlobe, or the heel of an infant when only a small quantity of blood is required. This method is less invasive and less painful for infants compared to venipuncture, which is typically performed on a surface vein in the arm.