The two sentences that use an apostrophe correctly in a plural possessive noun are:
- The basketball players’ lockers will be cleaned out on Friday.
- The United States’ national anthem is “The Star-Spangled Banner.”
The first one indicates that the lockers belong to multiple basketball players. The second correctly indicates that the national anthem belongs to the United States as a collective entity.
The other options either make incorrect use of the apostrophe or do not refer to a plural possessive.