Hyperbole
If don't know what it means its best to start of with what you do know
Process if elimination.
It's not a simile because it has no like or as.
Its not Personification cause its not giving the object human features.
And its not metaphor cause its not literally Applicable. I'm assuming.
So that just leaves you with hyperbole.
What are the implications of cashless society?
Benefits of a Cashless Society
Paper trails: Financial crime should also dry up. It is harder to hide income and evade taxes when there's a record of every payment you receive. Money laundering becomes much harder if the source of funds is always available. No cash management: It costs money to print bills and coins.
Hope it helps
Answer:
The significance of Jack's mask in chapter 4 of Lord of the Flies is that it allows him to feel liberated from "shame and self-consciousness" as he embraces his savage nature without guilt or embarrassment. Hidden behind his clay mask, Jack is free to behave like a primitive, bloodthirsty savage.