Answer:
Remove: "She voices some concerns about leaving Perkins."
Explanation: Reading through the text, I mentally removed each sentence. Only "She voices some concerns about leaving Perkins." makes the summary better when it rid of. The others do not make much sense removed. (Hope this helps)
The sentence that contains a dangling modifier is C) Looking through the window, the room seemed very large.
It is dangling because we don't know who the participial phrase <em>looking through the window </em>refers to. It certainly doesn't refer to the room, the room wasn't looking through the window.
