Final answer:
The correct form of the possessive pronoun for the plural form of 'your' is 'yours' option (1).
Step-by-step explanation:
The correct form of the possessive pronoun for the plural form of 'your' is 'yours'.
Example: The books on the table are yours option (1).
When indicating possession with "your" for a plural form, you use "yours." This form is a possessive pronoun that doesn't require an additional apostrophe or an "s" after it. So, for example, if you are referring to something owned by a group of people, you would say "It is yours." when indicating possession for "your" (plural) before a vowel, no changes are made.