D is the only sentence with the correct usage of quotation marks.
Halley's Comet does not have the size or mass to affect Neptune's orbit at all. perhaps a collision with a small planet would mess up Neptune's orbit but not Halley's comet
In literature, a symbol in a story or something is an object or person or event with a meaning different from its literal meaning. id go with symbol.
Answer: Peaceful
Explanation:
..... That's the best I can guess
