Read the following paragraph and answer the question. Give ONLY the answer, no other words or explanation.

For example:

Answer: <most likely answer, as short as possible>.

Paragraph: Like a foreign language . The tone of the creature 's voice changed . " Aurelia , do you know what I ' m going to do to you if you do n't show yourself to me ? I ' m going to kill you .

Question: Why did the tone of the creature 's voice change ?
The creature was getting mad at Aurelia and wanted to see her .
The creature threatened Aurelia.