Li Wei was asked to write a research paper about the current population of bald eagles in the United text is the best for Li Wei to read for this purpose?
a website about bald eagle counts in the United States
a book about bald eagle nesting sites in the United States
a magazine about bald eagle locations in the United States
a journal entry about bald eagle encounters in the United States

the best option is B) A book about bald eagle nesting sites in the United State.  

Explanation:

Of all the options cited above, the most authoritative source would be a book.

The next best resource is a website about bald eagle counts, as long as the information on the website is also acquired credibly and is a true research work not some copy and paste work.

Journals are also fine, whilst magazines would be the least resort.

Cheers!

a rough draft essay is the final form of an essay after it has been edited and polished.