Letter D because it starts with “In Conclusion”. I am assuming that number 3 is the last sentence in the paragraph.
1) B. because A comma is used after every fanboys (for, and, nor, but, yet, so)
2) D. because the commas are placed wrong and the ; is not needed.
3) A. because just like D. the right punctioations A rent placed right and or just not needed.
B an earth quke or unpredicted scale