The best answer would be letter A. Across the sky
Among all of the given choices, it's the phrase that could be interpreted in the most literal sense.
Option B- Stars rocketed could be literally imagined but it can be a form of hyperbole. It can be an exaggerated expression.
Option C- This is also another phrase that could have a literary device.
Option D- Another figure of speech
So, Option A is really the correct answer.