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.
They can act as a support system and hold you responsible for your goals
For this question it depends on each family and on the patient themselves. I suggest finding and talking to people with bipolar disorder and hear their experiences.
Answer;
-occurs when the body gets the proper amount of nutrients, and
-assists with normal development.
Explanation;
-Optimum nutrition involves eating the right amounts of nutrients on a proper schedule so as to achieve the best performance and the longest possible lifetime in good health, assuming that external negative factors such as accidents and infectious diseases can be avoided. Therefore, it occurs when the body gets the right amount of nutrients and assists with the normal development of the body.