(A) away
(B) out
(C) up
(D) out of
Explanation
to decide not to do something that you had said you would do:
The buyer backed out of the deal the day before they were due to sign the contract.
(A) away
(B) out
(C) up
(D) out of
to decide not to do something that you had said you would do:
The buyer backed out of the deal the day before they were due to sign the contract.