Public-access cable television was created in the 1970s as a means to derive public benefit from the laying of private television cables on public land.
from the laying of private television cables on public land
from laying private television cables on the public land
by the laying of private television cables on the public's land
from private television cables being laid on public land
by laying private television cables on land that was public
Why is the "The" in front of laying acceptable which is gernund and had no previous feference where as "the" the in fron of public land not.
The original sentence contains the correct idiom "to derive X from Y," where X and Y are both nouns. In this sentence, the noun phrase "the laying of private television" is used correctly after the preposition "from."
(A) CORRECT. This choice is correct as it repeats the original sentence.
B was wrong because "The public land" is not idiomatic, because there is no previous reference to a particular section of public land; the wording should be "public land." Incidentally, although the phrase "from laying private television cables" may sound preferable to the phrase "from THE laying OF private television cables" in the original sentence, there is actually no grammatical reason to prefer one or the other in this context; both are gerund phrases (in which an "ing" form is used as a noun).
(C) The correct idiom is "to derive X from Y," not "to derive X by Y." Moreover, "the