In which of the following excerpts does the author most plainly use setting to contribute to the tone of his story? a."she spoke a few words in a foreign tongue in a tone as though asking a question …"b."but madam, … i cannot possibly leave until i have seen the machine."c."suddenly a door opened at the other end of the passage, and a long, golden bar of light shot out in our direction."d."he shot one of his suspicious looks at me. 'perhaps we had better proceed to business, then.'"