Declining revenues resulting from a decrease in business travel, a source of income without which most commercial airlines could not survive, are going to force many commercial airlines to increase prices and decrease services in the coming months.
(A) a source of income without which most commercial airlines could not survive, are
(B) a source of income without which most commercial airlines could not survive, is
(C) and most commercial airlines use it as a source of income to survive with, are
(D) which is a source of income which is needed by most commercial airlines who could not survive without it, are
(E) which most commercial airlines use as a source of income without which they are unable to survive, is
in a) and b) i wonder how Declining revenues could the source of income.
can someone explain the subject of the sentence?
(A) a source of income without which most commercial airlines could not survive, are
(B) a source of income without which most commercial airlines could not survive, is
(C) and most commercial airlines use it as a source of income to survive with, are
(D) which is a source of income which is needed by most commercial airlines who could not survive without it, are
(E) which most commercial airlines use as a source of income without which they are unable to survive, is
in a) and b) i wonder how Declining revenues could the source of income.
can someone explain the subject of the sentence?
