They were better off. Without the discovery of the uses of fire, mankind would not be here. Fire led to the rapid increase of newer, more advanced tech, such as a sword instead of a club.
I believe the answer is that they separate syllables.
I hope this helps.
A. or "The family is letting us stay at their cottage"
The other one makes no sense in proper grammar
The topic sentence for the paragraph above is A. Sentence 1. A topic sentence is supposed to give the general idea of a paragraph. Sentence 1 briefly describes what and where plates are in the Earth's crust. The rest of the sentences give more detail about tectonic plates.
"the occasional scratch of her pen exerted just enough pressure to keep away the frightening shadows, the sad spirits from long ago, locked into events that couldn't change."
hope this help
