<em>Um... You have to include the text that goes along with this story so that we can answer the question correctly. I don't want to make you mad about this because I know that there are people who would get mad about this sort of thing but I just wanted to let you know that without the text we won't be able to answer your question the correct way, meaning that you would likely get it wrong.</em>
<em />
<em>Thanks for reading this and have a Merry Christmas,</em>
<em>Miri</em>
A thesis describes the main idea of the whole essay ;)
Macduff's son is a character that even though, his age is not stated in the play, is assumed to be young. The killing of this young character and especially the way that happened shows Macbeth's kingdom cruelty. The murderers call this boy "Egg" while he tried to defend himself and defend his mother who was later killed too.
It would cleanse the village of sin because the killing was a crime against the earth goddess.<span>
</span>
The one you have selected is the correct answer.