On the research team of the eminent virologist Dr. Thomas Francis, who was working on a flu vaccine, was a young physician<span> named Jonas Salk.</span><span>
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I think it would be E, forgive me if I’m wrong
Answer:
Foreshadowing is an advance sign or warning of what is to come in the future. It often gives a small hint as to a large plot twist or change that will happen. Hope this helps!