Explain control entry​

Control Accounts are the total accounts in the cost ledger which summarizes the totals of individual accounts (subsidiary ledger). In these accounts, entries are made once at the end of each accounting period based on the periodical totals of transactions in related subsidiary ledgers and books.

answer: a. the kind of population living in your neighbourhood.

the census explorer data tool by the us census bureau allows the user to zoom in on any neighbourhood within the united states and find the kind of people residing in that by race and age.  

the tool needs to needs to be used twice – once in order to find what type of people reside in a neighbourhood, and then to see the age groups of the people in the same neighbourhood.