After how many years is the Census conducted?

Correct answer: Ten years

Direct answer: Option A is correct. A census is a complete official counting and collection of information about a country’s population. In India, the population Census is generally conducted once every ten years, so it is called a decennial census. Step by step: the interval is ten years; therefore the correct choice is A. Option B, two years, is too short and is not the normal Census interval. Option C, five years, is also not the standard population Census interval, although some surveys may occur at different intervals. Option D, twenty years, is too long. The question asks about the regular national Census, not every possible population survey. Memory trick: “decennial” contains the idea of ten; connect decennial with ten-year Census. The supplied answer is consistent with the standard Indian geography fact.