(Cannot say) The Dead Sea Scrolls include the oldest known copy of the Book of Isaiah.
While the Dead Sea Scrolls do include a copy of the Book of Isaiah and the 4th sentence suggests that the Bible books are the oldest known copies, the above statement was not expressly stated
(False) The Dead Sea Scrolls were written on parchment
This is false because it presents an incomplete information. Line 2 and 3 of the Passage states that they were written on both papyrus and parchment
(True) The text on scrolls had varying dates
This is true as seen in line 4 of the passage
(True) This passage summarises the difference between two main theories on the scroll
The passage summarises whether the scrolls are the detailed accounts of one particular sect and it provides historical information about the wider jewish people
This is seen in the final 3 sentence