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Answer: Hope this helps
Explanation: Juneteenth – also known as Freedom Day, Jubilee Day, Liberation Day, and Emancipation Day – is a holiday celebrating the emancipation of those who had been enslaved in the United States.
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.