Answer:
you can try things like blogs, videos, podcasts, journals, newspapers, magazines, webpages, personal accounts
The exact mechanism of immune complex formation is unknown.
The answer is source B because it has a listed author who is an expert and it is the governments organization website which are more reliable that a .com website. Source A does not even list the author so you do not know who wrote it could be anyone.
Because they help you get healthy so that you will have a healthy body and a great healthy diet.
