An author's credentials can determine a health source's credibility. None of the other options would apply to credibility. When it comes to health, if you want to make sure that what you are researching or reading is authentic and reliable you need to find out whether the author is a professional health expert or not. You can do this by finding out their credentials.
Antacids NEUTRALIZES THE ACIDITY of our stomach. Like for example, putting water to a vinegar so it will not be too sout
the one that makes the most sense to me is C. sorry if im wrong
