for buying vs to buying

[kiranlegend]

Rather than continue to produce most of the items necessary for subsistence, a growing number of farm families during the first decades of the nineteenth century began to specialize in the production of grain or cotton and to use the cash proceeds from selling their crops for buying
necessities.
(A) selling their crops for buying
(B) the sales of their crops for buying
(C) their selling of crops so as to buy
(D) their selling crops for buying of
(E) the sale of their crops to buy

I choose C but the answer is E.. What is the difference in choices between B and E? for buying and to buy??

please explain

[Soup]

[quote=kiranlegend;337259]... families ... began to specialize in the production of grain or cotton and to use the cash proceeds from the sale of their crops to buy
necessities.

(A) selling their crops for buying
(B) the sales of their crops for buying
(C) their selling of crops so as to buy
(D) their selling crops for buying of
(E) the sale of their crops [in order] to buy

[kiranlegend]

you went by option E because of the usage of proper idiom from.. to,, correct? If that is the case A, B and D will be eliminated. please confirm:)


can you elaborate a bit more on the other option, C, that is left over?

[Soup]

You went by option E because of the usage of proper idiom 'from...to', correct?

I believe you mean "correlative pair", not 'idiom', and in your example, from...to is not a correlative pair. The two do not function together, but rather separately, as to is short for in order to.

.... families ... began ... to use the cash proceeds from the sale of their crops [in order] to buy necessities.

can you elaborate a bit more on the other option, C, that is left over?

Of the two options, from their selling of crops and the sale of their crops, the latter is the grammatical choice:

... families began ... to use the cash proceeds from __________________________ necessities.

(A) selling their crops for buying
(B) the sales of their crops for buying
(C) their selling of crops so as to buy
(D) their selling crops for buying of
(E) the sale of their crops [in order] to buy