The answer is (C), becuse the reader does not now was is threatening the characters lives. In the other answers it told "it" was thereatening their lifes. This is why (c) has the sentence fragment.
To be an effective speaker, you must first understand who you are as a speaker—and as a person. What are your strongest interpersonal qualities? How do you best connect with others? What qualities do you need to work on? <span>The most effective speakers </span><span>are constantly working to capitalize on their strengths—whether that’s great storytelling or a talent for getting the audience to participate—and also to improve upon their weaknesses. Tapping into your most powerful interpersonal qualities is an excellent way to make yourself accessible, engaging, and unique.
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