1. Which of the following reflexes is present in newborn infants and disappears by the age of 6 months? A. Sucking reflex B. Babinski reflex C. Moro reflex D. Tonic neck reflex Answer: C. Moro reflex Rationale: The Moro reflex, also known as the startle reflex, is present in newborn infants and disappears by the age of 6 months. It is an involuntary response to sudden changes in stimulation or position. 2. At what age does an infant typically achieve head control while in a prone position? A. 1 month B. 3 months C. 6 months D. 9 months Answer: B. 3 months Rationale: Infants typically achieve head control while in a prone position around the age of 3 months. This is an important milestone in their motor development. 3. Which of the following skills is typically mastered by infants at around 9 months of age? A. Rolling over B. Sitting without support C. Crawling D. Walking with assistance Answer: B. Sitting without support Rationale: Sitting without support is a milestone that infants typically master around the age of 9 months. This demonstrates the development of their core strength and balance. 4. At what age does an infant typically start to babble and make vowel sounds?