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
Vocabulary of 1.5 year old child is – 
Select and explain. 
A. 1–10 words, B. 10–20 words, C. 20–30 words, D. 30–40 words
B: 10–20 words
Answer: B: 10–20 words 
Explanation: None