The correct answer is turn back.
A. turn upside down
B. turn back
D. cast off allegiance
The correct answer is (B) To turn back; to return to a former condition, state, or owner; to go back to a former opinion, belief, etc.; to recur to previous subject in thought or talk.
Revert comes from Old French revertir, Latin revertere.
Examples of use:
- If left empty too long, the house will revert to its earlier dilapidated condition.
- He reverted to reading the newspaper.