Answer:
B. sum up the subject of the chapter.
Explanation:
The answer is option B) Simple
This sentence is saying just the simple idea of you traveling alone over there is ridiculous. They're saying why even bother introducing the mere or simple idea?
Best Of Luck,

In order to know why statue was built, we need to take a closer look at the statue and see whether an inscription is written on it.
Inscription is a group of words inscribed or written on a hard object like the statue. An inscription may contain facts about the inspiration behind the making of the statue, who built said statue, what the builder wants the statue to represent, as well as the dates when the building of the statue started and when it ended.