<span>after sentence 6 to support the topic sentence
This sentence shows a specific way that researchers are working on solar power. It also sets up the rest of the paragraph that shows how and why solar power is such a good alternative to fossil fuels. </span>
It's raining outside so she can't go to her friend's houses.
So that you can capture their attention and get their support.
I believe the answer is C. Vanquish.
I hope this helps!! :)