PLEASE ANSWER MY LAST LATEST QUESTION PLEASE WILL GIVE BRAINLIEST I NEED THAT ANSWER TODAY

Which would be the most credible source for researching the effects of smoking? letter from your grandfather web page about someone’s lung cancer report prepared by a tobacco company research article in a scientific journal

Can anyone plz with this question i accidentally posted on physics it's 99 points plus this 5 ponts and will mark as brainliest link :

Read the excerpt from “take the tortillas out of your poetry.” i do not believe we should have to leave out the crucial elements of our language and culture to contribute to american literature, but, unfortunately, this is a conclusion i am forced to reach. i have been writing for a quarter century, and have been a published author for eighteen years. as a writer, i was part of the chicano movement which created a new literature in this country. which type of rhetoric is used most in the excerpt to convince readers that anaya’s conclusion is accurate? an appeal based on emotion an appeal based on logic an appeal based on the author’s character an appeal based on the author’s feelings