Question

usage quick check
which sentence uses an apostrophe correctly in a plural possessive noun? select the two correct answers.
□ ellen is a member of three book clubs and has been for over a year.
□ the brothers birthdays are both in the month of september
□ the united states national anthem is the star - spangled banner.
□ all of the photographs frames are made from the same type of wood.
□ the basketball players lockers will be cleaned out on friday.

Explanation:

1. For plural nouns ending in -s, the apostrophe is placed after the -s. "Book clubs", "United States", and "basketball players" are plural nouns ending in -s, and their possessive forms "book clubs'", "United States'", "basketball players'" are correct.
2. "The brother's birthdays" uses the singular possessive form for "brother" instead of a plural possessive which is not what's asked. "All of the photograph's frames" incorrectly uses the singular possessive for "photograph" instead of showing plural possession.

Answer:

1. Ellen is a member of three book clubs' and has been for over a year.
2. The United States' national anthem is "The Star - Spangled Banner."
3. The basketball players' lockers will be cleaned out on Friday.