In a child, one should be worried if-
Ans. is 'd' i.e., Social smile absent by 10 weeks o Social smile develops by 2 months About other options o Delayed eruption is usually considered when there are no teeth by approximately 13 months of age --- Nelson o Toilet control develops by 3 years when child can withhold and postpone his bowel movement --- O.P. Ghai o Stammering may occur at 3 years --- Neeraj Ahuja
Stammering occurs at 3 years
Lack of Toilet control at 2.5 years
Teeth do not erupt by 11 months
Social smile absent by 10 weeks