Answer:
B. They allow the characters to reveal their emotions and opinions through dialogue.
Explanation: I took K12 test and got 100%
Reading isn't "reasonably' strong or solid ;)
A. Wolfson, Elijah. “Newsweek Names a Mars Crater.” Newsweek. Newsweek, 28 Feb. 2014. Web. 1 Mar. 2014.
B. Herman, Barbara. “Where’s the Fire?” Newsweek. Newsweek, 24 Oct. 2013. Web. 25 Feb. 2014.
D. “A Mighty Girl.” N.p., n.d. Web. 26 Feb. 2014.
The purpose of an introduction in a paragraph is to introduce the subject (of the artical, text,essay,ect...) and grab the reader's attention (on the topic).