A. by using it to introduce new characters and develop main characters!
You would use a semicolon (;) when you could stop a sentence but choose to continue it further.
A research question should answer this " do i know the field and its literature well" <span />
Answer:
While I <u>was taking</u> a shower, my cell phone rang. I asked my sister to answer it, but she didn’t hear me because she <u>was cleaning</u> the backyard.
(it's the first option)