<span>Flat earth
Hope it helps!!!!
</span>
Answer:
I believe its D
Explanation:
The first three don't have much to do with 9/11
hope this helps :)
External criticism is very important when it comes to analyzing data, because as a researcher it is possible to get too "close" to the data, in that one can stop being objective and start looking for ways to match the data to the desired results.
