The correct answer is:"The life of an immigrant is difficult".
By describing him as very skinny, and how badly his pants were, as well as the dingy mackinaw, we can determine that being an immigrant is difficult since he is skinny so he does not eat much, and he is dingy meaning that he does not have a place to clean his clothes, as well as the clothes being too large meaning that he had to use whatever he has or was offered.