What’s the answer to this question

I’m annoyed but glad that my history teacher left and quit her job as a teacher to become a flight attendant

Following archduke franz ferdinand's assassination, austro-hungarian leaders: a. aided the ottoman empire in its campaign to keep serbia under its control. b. executed nearly all prominent serbs living in austria-hungary c. threatened to invade serbia if serb leaders did not agree to a set of strict demands. d.. formed an alliance with great britain to protect austria-hungary from future attacks.

What is the ancient chinese belief that god chooses the emperor?