The passage gives a brief overview of the history of mad cow disease. It details when and how it started, the spread of the disease, and the efforts taken to eradicate it.
The one that would not contribute to the structure of Longfellow’s poem would be repetition of phrases. So, C.
Seriously?
Independent
"the cheetah darted away"
"he ran into the trees"
"it's funny"
Dependent
"before we knew it"
"after we scared him"
"because he scared me"
Interrogative would be your answer
