3rd one mrs. harris’s car
Answer:
A.) Researchers did not have any hope of understanding what happened in ancient Egypt, because “its history, its literature, its religious beliefs – remained hidden behind the lines of the mysterious hieroglyphs.”
Explanation: hope this helped! :)
Okay, where's the worksheet, fam?
The subordinate clause here is A, "as the layers of ash slowly compressed". Subordinate means that it cannot exist on its own, it has to be a part of the main, independent clause.