Choose the sentence that uses apostrophes with possessive nouns correctly. The horses' tails flapped like flags in the wind.
The horses tails' flapped like flags in the wind.
The horse's tails flapped like flags in the wind.

themselves

an intensive pronoun is a pronoun that ends in self or selves, such as himself, herself, themselves, yourself, ourselves. since band members is a third person plural, the correct intensive pronoun would be themselves. if the band was talked about as a collective noun, itself would be the appropriate intensive pronoun. intensive pronouns are used to add emphasis to the noun it's modifying which is why it directly follows it.

what was your story about? i remember this from my language arts class in flvs! i had ms. rosemeyer.

are you asking for advice? if so, i think its great! i like how you gave specific details. i think you will get a good grade on it!