Which accounting concept requires that the value of economic data be recorded in dollars?

Unit of measure concept

Explanation:

In accounting, there is a standard convention that stipulates that all transactions must be consistently recorded using the same currency, in the case the dollars. This is what is known as the unit of measure concept.

In a case or cases where there are transactions that are carried out in currencies other than the USD, what is done is that there is a conversion between the values in the other currency and in the USD.

It is essential that there is a consistency in the unit of measurement as an absence in consistency would make it difficult for financial statements to be produced

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.