Answer:
The writer is introducing an idea by comparing it to a situation most people would understand or experience.
Explanation:
by comparing the voting process to a situation people can relate to more, it makes it easier to understand and relate a larger scale of voting or protesting.
It's not A because that is irrelevant. It's not D because that is also irrelevant. That leaves us with C or B. I would say that it is B, because it is relevant to what is in the rest of the paragraph.
It is a tool that helped decipher Egyptian hieroglyphics.
