Bones that function primarily to protect viscera are skull bones, rib cage, shoulder girdle and pelvic girdle.
New medications have more strict process to receive an approval from FDA compared to new dietary supplements which, some doesn't even need FDA's approval to be released in the market. Dietary supplements include in their labels "No approved therapeutic claims" to save them from legal responsibilities. During the titration, the repeated trials for the supplement varies from the medication is maybe because of less stability preservation of the supplement which caused it to degrade.
It's mite be c or a if not then b definitely
Stress can affect your social health in multiple ways. Such as, it can make you moody which can make you lash out at friends. You can also start to ignore them or get mad or frustrated easily. It can affect you mentally because it can make you less focused. It can also make you frustrated at what you're doing. It can also make you go a little crazy with all the things you have to do. Finally, it can affect your physical health because, in one way, you may lack sleep. Say it's already midnight because of a project you had to work on and you have to study for two exams that are in your first and second period tomorrow. You could end up taking a nap and failing the entire class. So, what I recommend is to step away from your work, take a few deep breaths and go out and do something fun. Like reading, watching tv, youtube, or whatever you enjoy doing. After you feel calm, go back to your work feeling refreshed.
Hope this helps! :)