The correct option is B claim
The word 'surrender' refers to stop resisting and submitting to authority.
Option A, release refers to being able to escape form confinement.
Option B, claim refers to a formal request or command.
Option C, plunder refers to the violent and dishonest acquisition of property.
Option D, attack refers to criticising and opposing fiercely and publicly.
Thus, according to the meaning, the word 'claim' is the opposite of the word 'surrender'.