Multiple choice the US Constitution requires that a national census be taken every 10 years to Provide information about voter registration determine the number of representatives in the House of Rep decide who can vote in presidential elections establish a standard for setting income tax rates Reveal answer Fill a bubble to check yourself B Correct answer Explanation The Constitution mandates a census every ten years to determine the population of each state. This data is then used to reapportion the number of seats each state receives in the House of Representatives.