C is the answer hope this helps
Third person plural pronoun is THEY.
If you want to create a possessive pronoun out of that one, that would be THEIRS.
Possessive pronouns, as the name itself says, determine some kind of possession. For example:
Is this books yours? - No, it's theirs.
This seems like it belongs more in the catagory of history but if the author is Thomas Jefferson, or any president from Jefferson until the Civil War than they are most likely for it
D: it is a book because most information in books are more truthful then the web/ internet.
Answer:
I learned all about this last year
Explanation:
