a. Helen is frustrated by the challenges associated with learning to communicate.
Something symmetrical might be a butterfly, being looked at from the top. Something that might be asymmetrical might be someones face.
I think the answer it will be C
The "Nut Graph" is known as the paragraph that helps to put the story in context, provides any additional information that may be useful for the reader and that can lead to a better understanding of it.
The Nut Graph is often the third or fourth paragraph of the news story and the information that contains is always related to how the context affects the reader and the story as well.
In journalism, it is used when the writer considers that the reader will need more context in order to understand why, what, who and how it happened, without really saying it, because this answers are normally given during the first and second paragraph.
