Final answer:
The U.S. Population Census, option b, is an example of a census. It collects information about the demographics of all residents in the United States and its territories.
Step-by-step explanation:
The U.S. Population Census, option b, is an example of a census.
A census is a survey that aims to gather data about an entire population. In the case of the U.S. Census, it collects information about the demographics of all residents in the United States and its territories.