The correct sentence is sentence C, I believe.
My estimate would be embarrassment. This is because she is displayed as 'her face is bright red'.
The emotion shown by this body language is most likely going to be embarrassment.
Btw sorry I clicked post too early.
I think it’s either B or C because they both show a way someone could be showing fear but I didn’t read the article so you should choose whether B or C matches the article better :)