The correct answer to this open question is the following.
Although there are no options included, we can say the following.
A census is a regularly-occurring and official count of a particular population. Census data available at the United States Census Bureau website are an example of data collection public website for statistical purposes.
The US census is taken every ten years to collect information from citizens regarding age, gender, and race. That is why the go directly to your home. This information is important and useful for the United States federal government to forecast scenarios and make decisions regarding demographics and economics.
