Write three sentences using plurals correctly and three sentences using possessives correctly on the topic of how to store personal financial information effectively and efficiently.

Did I write these sentences correctly?

Plural-
-To store important financial information, you need a filing cabinet with a lock and durable folders.
-When storing financial information in a filing cabinet, you should label each folder for better organization.
-To keep all financial papers organized, you should stack them in order by date, then put them in a file.

-Possessive
-I filed all of my paystubs in the filing cabinet.
-We store our insurance papers in a fireprood safe.
-I have a usb port as a back up, to store all of my financial information.

I see no plural word in the second sentence.

Were you to use possessive pronouns or possessive nouns in the second set of sentences? If possessive pronouns, all are fine. If possessive nouns, there are none.

The question just says possessives. It does not indicate whether it should be nouns or pronouns.

Yes, you have written these sentences correctly. You have used plurals correctly by referring to multiple items or concepts. To use plurals correctly, remember to add an "-s" or "-es" to the end of the word, depending on the spelling rule.

You have also used possessives correctly by indicating ownership or association. To use possessives correctly, add an apostrophe followed by an "s" ('s) to the noun when it is singular, or add an apostrophe (') after the "s" when the noun is plural.

Well done!