This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
A 4 year child can perform one of the following ? 
Select and explain. 
A. Can hop on single leg for 15 feet, B. Can skip without falling to either side, C. Can stand one feet for 20 seconds, D. All
A: Can hop on single leg for 15 feet
Answer: A: Can hop on single leg for 15 feet 
Explanation: Ans. is 'a' i.e., Can hop on single leg for 15 feet o A child can hop on one foot by 4 years. o A child can skip by the age of 5 years. o A child may stand on one leg for 10 seconds (not for 20 seconds) by 4-5 years. o A child can go down stairs with alternating feet by 4 years