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
An 18 month old infant can do A/E - 
Select and explain. 
A. Climbing upstairs, B. Can follows mother's activitiesCan turn 2-3 pages at a time, C. Can say 2-3 words, D. Can make tower of 8 cubes
A: Climbing upstairs
Answer: A: Climbing upstairs 
Explanation: Ans. is 'a' i.e., Climbing upstairs A child walks up and downstairs with one step at a time by 2 years. o A child can mimic the action carried out by the mother at home (mimicry) by 1 year*of age. o A child can turn 2 or 3 pages of a book at time by 13 months. o An 18 months old child can use 10 words with meaning. o An 18 months old child can build a tower of 4 cubes (not 8 cubes).