19. The U.S. census is not perfect: thousands of Americans probably go uncounted. However, the basic statistical portrait of the nation painted by the census is accurate. Certainly some of the poor go uncounted, particularly the homeless; but some of the rich go uncounted as well, because they are often abroad or traveling between one residence and another.

Which of the following is an assumption on which the argument above depends?

(A) Both the rich and the poor have personal and economic reasons to avoid being counted by the census.

(B) All Americans may reasonably be classified as either poor or rich.

(C) The percentage of poor Americans uncounted by the census is close to the percentage of rich Americans uncounted.

(D) The number of homeless Americans is approximately equal to the number of rich Americans.（C）

(E) The primary purpose of the census is to analyze the economic status of the American population.

How can the answer be C ?

The similar percentages of uncounted both rich and poor can justify the accuracy of census ? ridiculous to me.

My choice is E.

If the census is aimed at collecting data on economic status, then the absence of either the poor or the rich will only present a distorted picture, right ?

Welcome to discussion .

This was ever disscussed, try "search".

Basicly, the rate is the matter not the exact number.

I know my explaination is weak.