Tall, upright and straight ,what is the answer?

The Meridian Line is the correct answer 

List the sentences. keep in mind when you use sarcasm you are saying one thing in a tone to make it clear you are joking. like for instance, pretend you get a math test from your teacher. you’d most likely say, “oh yay.. a math test.” but you’d have the tone to give it the “oh come on” feeling. does this at all?

The answer is c) people evacuated but almost all returned