B. Excitement........................................................................
I think the question is asking which sentences include misspelled words.
It's sentences 2 and 4 and the misspelled words are:
"success" and "environment" in sentence 2: they are misspelled in the original text.
"cold-weather gear" and "chose" in question 4
Additionally "anxious" is misspelled in question 3.
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).
When something happens to our body, it is the job of the nervous system to transmit these sensations (both positive and negative) and inform the body of what is happening. If you observe the entire country to be a body, the media would be the nervous system as its job is to transmit the information throughout the entire body, making sure every part of the body is aware of a certain sensation.