B. the 1755 Lisbon earthquake
6 < 3b
Divide both sides by 3,
6/3 < 3b/3
2 < b
3b + 12 < 9
Substitute 12 from both sides,
3b < -3
Divide both sides by 3,
b < -1
So, option D is your answer.
Hope this helps!
Answer:
1. simple sentence
Explanation:
There is only one clause, and it is independent, so it is simple sentence.