Answer: A) "It was easy to see that if he had been clean and well dressed he would have been decidedly good-looking."
Explanation: The tone of a text or sentence is the author's or speaker's attitude towards the audience, the subject or even the characters of the text. There are many different kinds of tones, like: positive, negative, objective, sad, angry, etc. Admiring means to regard with wonder, pleasure, or approval, the lines that have an admiring tone, are the corresponding to option A, because the speaker is admiring how good-looking the man was.
