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 child speaks sentences at the age of ? 
Select and explain. 
A. 6 months, B. 1 year, C. 18 months, D. 2 years
D: 2 years
Answer: D: 2 years 
Explanation: At 2 years, a child can make simple sentences and uses pronouns.