Perhaps Martin Luther King? I am not 100% sure though.
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
Newspapers and television can be the most biased, because are influenced by owners and journalists personal view. Things can only be published/said with someone's approval, so can be directed to one's point of view.
Internet is the least biased, because its content come from multiple sources. But depending on the source, also can be wrong, or not be reliable.
