They can provide evidence to support the speaker :)
Hope it may helps uh dear
If you want to know whether that sentence is punctuated correctly, then you are right - it is.
You need to have a comma after the word range, because that is where the dependent clause ends, and there should be no comma before the conjunction and.
<span> A. Problem/solution
This paragraph starts by identifying the problem that NACA faced: they needed more computers. The solution is then described in detail. They ended up hiring women, and the paragraph goes on to show how and why the number of women and the racial diversity at NACA grew over the next ten years. </span>
Question 1: A
Question 2: A
Question 3: B
Question 4: D
Question 5: A
The author's prior knowledge with some opinions from others