Answer. 9th grade.
Explanation. That is when my school introduced it.
The second choice is a fragment, not a complete sentence.
I believe the correct choice is number one, because if you turn the sentence around, it answers the question of why the crowd is gathered. You may want to confirm on the website chompchomp.com (Grammar Bites).
Answer:
For the two rivers its
<em><u>Huang and Yangtze rivers</u></em>
the longest river is <em><u>Yangtze river</u></em>
Why the two rivers were important was because <u><em>the Yellow River to the north and the Yangtze River to the south. These major rivers were a great source of freshwater, food, fertile soil, and transportation.</em></u>
And I'm pretty sure what they meant by what the names were for the scientists is <u><em>Archaeologist</em></u>
<u><em>Have a great day a god bless, I'm a Hebrew and god has done great things to me so have faith in him and be strong don't give up because Yeshua ( Jesus) got up so that we could get up again</em></u>
Explanation:
Hope this helps, PLEASE MARK BRAINLIEST!!! SORRY IM LATE
He faces obstacles such as the Cyclops, Scylla and Charybdis, and the Sirens.