When the subject of a sentence comes before the verb, the sentence is in natural order.
When the verb or part of the verb comes before the subject, the sentence is in inverted order.
The verb is mixed so the subject comes before the verb.
I believe the answer is A. Natural
There is no underlined word.....
true. in Spain they take siestas
it's either a or b. I'd have to read the rest if the article. but from what I read I think its b