Diarrhoea means loose stools …………in one day.

Correct option is B

Sol. According to WHO and IMNCI, diarrhoea is defined as the passage of 3 or more loose or watery stools within 24 hours. In breastfed infants, it should be more frequent than the usual pattern to be called diarrhoea.
Explanation of each option:
· (a) 2 or more times – Not sufficient to be labelled as diarrhoea. Children may pass 2 loose stools without it being pathological.
· (b) 3 or more times – Correct answer. This is the accepted global standard for defining diarrhoea in all age groups.
· (c) 4 or more times – While it indicates severity, the minimum diagnostic cutoff is 3, so this is not the textbook definition.
· (d) 5 or more times – This may suggest moderate or severe diarrhoea, but it exceeds the basic definition.