This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: AIIMS 2017, Subject name: Pediatrics
Absence of which of the given milestones in a 3 year old child should be called delayed development? 
Select and explain. 
A. Hopping on one leg, B. Drawing square, C. Feeding by spoon, D. Catching a ball reliably
C: Feeding by spoon
Answer: C: Feeding by spoon 
Explanation: 18 Months Walks up/down stairs with help Throws a ball overhand Jumps in place Builds 3-4 blocks tower Turns 2-3 book pages Scribbles Uses cup and spoon 10+ word vocabulary Identifies common objects Has temper tantrums Understands ownership ("mine") Imitates others 3-4 years old Movements milestones Hops and stands on one foot up to five seconds Goes upstairs and downstairs without suppo Kicks ball forward Throws b all overhand Catches bounced ball most of the time Moves forward and backward with agility Milestones in hand and finger skills Copies square shapes Draws a person with two to four body pas Uses scissors Draws circles and squares Begins to copy some capital letters