How can you know if the person or organization providing the information has the credentials and knowledge to speak on this topic? one clue is the type of web site it is--the domain name ".org" tells you that this site is run by a nonprofit organization.

The affiliation of the writer is that She is on the staff at the Center for Food Safety (CFS).

Explanation:

CFS stands for the Center for Food Safety which is the national non-profitable public environmental and interest advocacy organization that is working for protect the human health and environment by the curbing use of the harmful food productions technologies and by the promoting an organic and other form of the sustainable agriculture.

you need to be a high enough rank