Answer:
Volcanic eruptions are dangerous.
Earthquakes are dangerous.
Floods are dangerous.
Tsunamis are dangerous.
Explanation:
Okay, so as long as you have certain conditions, it can be a sentence. Therefore, you can spend a quick amount of time writing these. You need a noun and a verb, which is why these are quick.
I think it would be c,b, and a but i am not sure i hope i helped
