It is correct, the active form of the sentence is PLEASE SIT DOWN, because <em>“You are requested to be seated “</em>is an imperative sentence in the passive voice .
The correct answer here is the third one: Limited omniscient. We know this because a narrator who knows everything about all the characters is all knowing, or omniscient and a narrator whose knowledge is limited to one character, either major or minor, has a limited omniscient point of view.This text is a perfect example of an omniscient limited. I hope this helps
he didn't liked his behavior and they didn't get along, they have their ownd ifferences when thye first met and thats hwy he kileld her