Correct Option: A

return (Verb) : to come or go back from one place to another ; reappear
migrate (Verb) : to move from one part of the world to another according to the season
rehabilitate (Noun) : to help somebody to have a normal, useful life again after he has been very ill/sick or in a prison for a long time transfer (Verb) : to move from one place to another
settle (Verb) : to put an end to an agreement; to make a place your permanent home