This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Growth, Development, and Behavior, Subject name: Pediatrics
Toilet training should be started at what age? 
Select and explain. 
A. 2 years, B. 3 years, C. 4 years, D. 5 years
A: 2 years
Answer: A: 2 years 
Explanation: Ans. A. 2 yearsToilet training should be started after 2 years of age, when the child has spontaneously started indicating bladder and bowel fullness and is able to follow simple instructions.