This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Social and Language Milestones, Subject name: Pediatrics
Significant variations in attainment of milestones in different developmental domains is called: 
Select and explain. 
A. Delay, B. Dissociation, C. Dency, D. Disability
B: Dissociation
Answer: B: Dissociation 
Explanation: Significant variations in attainment of milestones in different developmental domains is called 'Dissociation'. Dence- Acquisition of milestones in a sequence that is different from the usual Ex: Walking may come before crawling in cerebral palsy. Delay is when child does not reach their developmental milestones at the expected time. Developmental disabilitiesare a group of conditions due to an impairment in physical, learning, language, or behavior areas.