Answer: Secondary data
Explanation:
The secondary data is one of the type of data which is specifically collected by the researchers and the this type of data readily available and can be easily obtain from all the other type of resources.
The main purpose of the secondary data is that it helps in solving the various types of problems related to the data and it is easily available as it not expensive.
According to the given question, the united states census report is basically determining the information regarding the children under the age group five stay near the market area and this type of data is called as the secondary data.
Therefore, Secondary data is the correct answer.