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. now scan the post to find the name and credentials of the person who wrote it. what is the affiliation of the writer? what is the affiliation of the writer? she is a genetic engineer. she is a public relations officer for monsanto. she is on staff at the center for food safety (cfs). she is a journalist.

She is on staff at the Center for Food Safety (CFS)          

Explanation:

The person speaking on a particular topic must have the knowledge and credentials over the subject domain. By seeing the type of domain name in the website, it can be found out that the domain name is ".org" which means the person writing belongs to a non profit organization.

Hence the writer is a staff member at the Center for Food Safety which is a non for profit organization in the United States of America. Its main function is to protect the human health and protect the environment. It also focuses on the new techniques for food production.

can you explain a little further maybe give multiple choice? ?