A sports medicine journal found online is the most credible source because it focuses on the topic of sports medicine.
The other answers are wrong because they are not credible, like the professional athlete who doesn't specialize in medicine or the article in the historical section, or on topic, humorous essay.
Hope this helps!!!
The answer is A because is the most obvious and true answer because he uses words like fearful, bloody, fiery, you know.
b. primary sources should never be biased or else its not a primary source
hope this helps :)
I can help I read books 1,9,11