Final answer:
Infants are typically able to sit and creep on their hands and knees around ten months of age.
Step-by-step explanation:
Infants are typically able to sit and creep on their hands and knees around the age of __________ ten months. By this age, they have developed enough strength and coordination in their muscles to support themselves in a sitting position and to crawl on their hands and knees. able to pick up objects with a pincer grasp and exhibit fear around strangers.