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.
Do u mean ur anatomy organs??
You may not be flexible and hurt your key badly and can lead to a lot of pain
Exposure to the sun can cause cancer
