Option 1 states that the median age of India`s population is less than 25 years. The median age refers to the age that separates the younger half of a population from the older half. Therefore, if the median age of India`s population is less than 25 years, it means that more than half of the population is below the age of 25. However, the correct answer is option 2.

Option 2 states that the median age of India`s population is between 25 to 30 years. This means that the age that separates the younger half of the population from the older half falls within this range. It suggests that a significant portion of the population is between the ages of 25 and 30. This is a more accurate representation of India being a "young country" compared to option 1.

Option 3 states that the median age of India`s population is between 30 to 35 years. This would imply that the population is slightly older compared to option 2. Option 4 states that the median age is between 35 to 40 years, suggesting an even older population. However, the correct answer is option 2 as it indicates a younger population with a median age between 25 to 30 years.