The answer would be that the tone is peaceful because it sounded like the lady gave him something and that's why he's saying thank you. It's not really joyful and the boy didn't do crazy things so that eliminates suspensful and joyful. The reason I didn't choose angry and violent is because even thought she shut the door, she didn't slam the door. So Peaceful is the answer
You might need to reword this to get an answer.
True because all sentences are positive, negative, or both
One of the books I have with me right now is a Handbook in Chemical Engineering. The Modern Language Association (MLA) citation of this book is,
Perry, Robert H and Don W. Green. Perry's Chemical Engineers' Handbook. New York: McGraw-Hill, 2008. Print.