What sentence part follows a linking verb and describes the subject

i don't know exactly what it's asking, but either one of these pairs would

her; him

edith; sam

hope this ya

the answer should be d) he was one of those young thousands who greeted the war with a certain amount of relief, welcoming the liberation from webs of tangled emotion" since it is the best option because it shows his desire to free himself. 

hope this answer you! have a great day.