The conflict in Serbia between Austria-Hungary and Russia help ignite World War I because Europe split into Allied and Central powers as countries honored alliances to fight together if attacked. The balance was built in a way that just a sparkle would have be enough to cause a big flame. The conglit i Serbia was that sparkle.
The answer to this is "the polls", on in other words "surveys of public opinion".
The polls can for example look as follows:
51% of people prefer blue to red, and 49% prefer red to blue - this can for example inform toothpaste companies how to design their packaging.
Polls also help predict the result of political elections.
So they could find a quicker, safer, route to China to trade for spices and silk.
The answer is either a, b, or c, or s
Based on the situation indicated in the selection, we could conclude that Katie belongs to the conventional level of moral development. In addition, Katie has already this ability to judge on what is right and what is wrong as what her mother has taught her. These level of moral development belongs to adults already.