Read the caption from when birds get flu by john diconsiglio. epidemiologists worried that one or two sick chickens could infect a whole town. and that town could infect the country—or even the world. the author most likely includes this supporting text toreinforce the case study's point that bird flu is dangerous. reinforce the case study's point that chickens are dangerous. draw conclusions about the chickens mentioned in the case study. draw conclusions about the epidemiologists mentioned in the case study.

The correct answer is:

To reinforce the case study's point that bird flu is dangerous.

On his book When Birds Get Flu and Cows Go Mad! How Safe Are We?, John DiConsiglio examines real examples of people contracting bird flu and a mad cow disease alarm in Washington. It also presents a summary of symptoms and treatments and addresses HIV.  The main problem that the author is approaching is whether or not only one animal can cause a national health emergency.

dude you should crop your image so only the question shows. but   can you explain it better

where's the