We brought books,so I hope they will bring
(3.)theirs
its number three because if you stated i hope they will bring their ..... its incomplete
or if you put i hope i bring them ..... its just not sounding right...
He tells him that only God knows the future like it's obvious
D. “From there we reached the border that divided....I witness the horrendous art of justice.” (Apex)
D. Run-on Sentence
The other options wouldn't make any sense except maybe "A", but a fragment is not completed whereas a Run-on would be completed, just lacking punctuation.
