Read the passage from When Birds Get Flu by John DiConsiglio. Dr. Dowell had proven that bird flu could pass from person to person. But still, it hadn’t been spread easily.

Which excerpt from earlier in the text best provides evidence to support Dr. Dowell’s conclusion in this passage?

-The next step for Dr. Dowell and his colleagues was to determine how mother and daughter had caught the flu.
-After helping her uncle bury some dead chickens, the girl developed a stomachache and a high fever, Dowell learned.
-During her day in the hospital, she never left her daughter’s room. That meant the mother most likely caught bird flu directly from her infected daughter.
-It had become even more dangerous than before. Now many other people would be at risk of getting sick and dying.