Answer :
Answer:
If the noun is plural and ends in -s, the possessive is formed by adding an apostrophe after the -s.
Explanation:
Possessive nouns show ownership of a noun that names a person, place, thing, etc. Plural shows that the noun refers to more than one person, place, thing, etc. and is indicated by adding -s at the end of the noun. Plural possessive nouns share both qualities and, as they already end in -s, have an apostrophe at the end. For example: boys' club or countries' governments.