The correct option is
A Restore
To “give back” means to return something.
“Restore” means to bring back or re-establish.
“Forego” means to go without something.
“Forbear” means to politely refrain from doing something.
“Retaliate” means to make an attack in return for another attack.
“Avenge” means to take revenge.
Hence option A is the correct answer because it is the correct meaning for the given phrase.