Answer: Pistols and revolvers
Explanation: (Dont ask how I know that (;)
It is the largest explosion that takes place in space. A supernova is the explosion of a star.
Ok. for question #1:A.
question#4 (i think, idk):C
question #6:A
question #7:A
question#14:B
question#15:D
question#18:D
question#19:A
(btw I barely understood any of that, so please next time, clarify your question to make it easier to comprehend)
The beginning starts off with "has taught" indicating a foreword. The passage also talks about past achievements and accomplishments.