I believe the answer is Present Perfect.
Hope this helps!!
While all the answers have a degree of validity, option C is the most correct one. Flashbacks are essentially a narrative technique that allows the author to break the usual monotony of storytelling by jumping back and forth between events and turning a linear story (from point A to point B) into a circular one (from point B to point C through point A, for instance).
Answer:
"Look at this fossil I bought at the gift shop,"
Explanation:
"It," causes the sentence to become a run-on, and therefore isn't grammatically correct. However, if the sentence said, "Look at this fossil I bought at the gift shop," then it would have no need to be changed, as it is a full sentence in itself with no run-on.
B. Relief
The friends will obviously be relieved that they have found each other
