Thye correct answer is the following: Along my road trip I visited Rochester, Minnesota; Des Moines, Iowa; Lincoln, Nebraska; and Jefferson City, Missouri.
Semicolons are used within a sentence when it presents commas for smaller separations of nouns and you need a bigger separations to be represented. In this case, the speaker is listing the cities they visited and what states those cities belong to. Each city is correctly separated from its state by means of a comma, and each noun phrase (city plus state) is therefore separated from eachother by a semicolon.
Well saying dunno is an error in formal/academic writing. In academic writing you would have to write, i do not know, though.
The Answer is: It is their only way out.
"Yes," replied the Professor, looking at me calmly from under his spectacles, "it is the only chance which remains to us of ever escaping from the interior of the earth to the light of day."
It would be C hope that help
