keepsmilinyaar wrote:This fall two out of five households in the United States will harvest some of their own food from a vegetable garden in backyards and city lots.
(A) their own food from a vegetable garden in backyards and city lots
(B) its own food from a vegetable garden in backyards and city lots
(C) their own food from vegetable gardens in a backyard or a city lot
(D) their own food from vegetable gardens in backyards or city lots
(E) its own food from a vegetable garden in a backyard or a city lot

should we use "its" or "their"?? Also, option D uses the word "OR" which is used in place of "AND" in the original sentence.

The answer is D.

Source: Test Code 42 GMAT Test Paper

You have to use "their" -- 2 out of 5 households clearly requires "plural
their" instead of singular "its"

"or" is preferred over "and" here.

This fall two out of five households in the United States will harvest some of their own food from a vegetable garden in backyards and city lots.
(A) their own food from a vegetable garden in backyards and city lots
(B) its own food from a vegetable garden in backyards and city lots
(C) their own food from vegetable gardens in a backyard or a city lot
(D) their own food from vegetable gardens in backyards or city lots
(E) its own food from a vegetable garden in a backyard or a city lot

The use of the singular form "its" is wrong...hence eliminate choice B&E
A & C can be eliminated as well...they do not maintain consistency with numbers...

Hence D