The question seeks to determine the approximate percentage of internal migrants in India, as per the 2011 Census. While the question does not mention the exact figure, it does provide four possible options:

Option 1 suggests that 25% of the population are migrants, whereas option 2 increases this figure to 35%. The trend continues with option 3 and 4, suggesting that 45% and 55% of the population, respectively, are migrants.

Based on the census data, the correct answer is option 2, which means that approximately 35% of India`s population is considered internal migrants. This figure refers to people who have moved from their previous residence to a new location within the Indian subcontinent. Globally, internal migration impacts social, economic, and political aspects of both, the places people leave and where they settle.

The discrepancy between the percentages presented in the four options demonstrates that migration varies widely and is not evenly distributed.