The sentence that uses parallel structures is B) My three favorite activities are writing, reading, and going to the library. A parallel structure means that the same form of a verb is used in a sentence, and as you can see, here only gerunds are used - writing, reading, going - they all have -ing in the end. The other sentences don't have a parallel structure because they don't use the same forms.
Natives is usually a sufficient definition, however, it can also refer to someone merely born in a specific state after there parents moved there e.g. "I am a Texas Native."
