<prompt> All of the following are considered development delay except:Pincer grasp not at 9 monthsNot able to sit at 9 monthsNot able to go up and down stairs at 2.5 years of age2 words phrase at 18 months of age  <response>: Ans. d. 2 words phrase at 18 months of age Ref: Ghai 7e p31Spontaneous 2-word phrases pivotal speech, consisting of the flexible juxtaposition of words with clear intention is characteristic of 2 years old and reflects the emergence of grammatical ability syntax.Development Milestones in a child of 3 years:Motor: Goes up stairs with one foot on each step, riding tricycle.Fine motor: Makes tower of ten cubes, draw a circle.Social: Dry by night, knows gender.Linguistic: Know age, gender and nameDevelopment MilestonesMotorFine motor 3 months - Neck holdingQ. 5 months - Sitting with supportQ. 6 months - Prone to supine, supine to prone. 8 months - Sitting without supportQ. 9 months - CrawlingQ 10 months - Creeping. 11 months - Walks two hands held or on holding the furniture. 12 months - Walks few steps independentlyQ. 2nd year - Walks up and down stairs with two feet on each step, runs, can kick a ball. 3rd year - Goes up stairs with one foot on each step, riding tricycleQ 4 years - Comes down stair with one foot on each step. 5 years - Skip. 4 months - Grasps a rattle or rings when placed in hand 5 months - Goes for object and gets them usually with bidexterous approach, puts objects into mouth, plays with toys. 6 months - Drops one object when another is given. 9 months 0u Unidexterous approach to object transfers retains one cube when another is offered, Pincer graspQ. 1 year - Gives toy to examiner. Mouthing is much reduced. 15 months - Self feeding with spoonQ 18 months - Self feeding with cup. Makes tower of three-four cubes. 2 years - Makes tower of six-seven cubes, and can turn page of book one at a time 3 years - Makes tower of ten cubes, draw a circleQ 4 years - Draw plus and squareQ 5 years - Draw cross x and triangleQ Development MilestonesSocialLinguistic 2 months -- Social smileQ 3 months -- Recognizes mother. 6-7 months -- Smiles at mirror image. 9 months -- Waves bye-bye 1 year -- Shakes head for no. 15 months -- Hugs the parent. 2 months -- Vocalizes. 3 months -- Cooing. 6 months -- Mono syllabus ma, baQ 9 months -- BisyllableQ ma-ma. ba-ba. 12 months -- Two words with meaningQ 18 months -- Ten wordsQ Development Milestones 8 months - kisses the parent. 2 years - Dry by day 3 years - Dry by night, knows genderQ 4 years - Goes to toilet alone. 2 years - Simple sentences. 3 years - Know age and gender and nameQ 4 years - Tell storyQ 5 years - Name four coloursQ 