909. Urban officials want the census to be as accurate and complete as possible for the reason that the amount of low-income people in a given area affect the distribution of about fifty billion dollars a year in federal funds.

(A) for the reason that the amount of low-income people in a given area affect
(B) for the reason because the amount of low-income people in a given area effects
(C) in that the amount of low-income people in given areas effect
(D) because the number of low-income people in a given area affects
(E) because the numbers of low-income people in given areas effects

Solution:

Subject- verb agreement + Idioms

A, B, and C: “amount”, which must be used only with uncountable nouns, has been used with “low income people”. “People” is a countable noun. Hence, these choices are incorrect.
C and E: effect or effects (noun) is wrong. “Affects” (verb) should have been used. Hence, E is incorrect.
D: “the number of low- income people….affects…” is idiomatic and subject-verb agreement is achieved.


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