Its #2 burger.. the structural linguist are.. Charles C. Fries, Edward Sapir, and Leonard bloomfield. There is no one with the last name burger :)
For one Flat Characters and Round Characters don't have much of a difference... BUT there's answer choices so obviously there's a very converted answer in this.
Coming to all my conclusions and marking out answers that make less and less sense LOL
My conclusion would be that: "Flat characters are one-dimensional characters with less important story lines; round characters are multifaceted with story lines that are essential to the plot."
I really hope this helps!!
-From your friendly brainly gal,
Sam lololll
<span>B. Even though Juan has just transferred to this school, many already consider him a friend.</span>
Using the formula:

Which is, 3.14 x 2^2 (radius is half of diameter)
Which equals 12.56.