Needresearchers from around the world have declared this fast-acting, appetite suppressant as a modern medical miracle for americans who struggle with weight loss. which of these best identifies the type of propaganda technique used in the third sentence? a) transfer b) plain folks c) testimonial d) name calling

This sentence uses A) Transfer propaganda. 

This type of propaganda uses figures that people generally tend to trust, or value the opinions of. By stating that researchers world-wide are in support of this product, it is more likely that people will want to try the product, because people who conduct important research are generally seen as being intelligent and trustworthy.

Abiography is a description of a real person's life, including factual details as well as stories from the person's life. biographies usually include information about the subject's personality and motivations, and other kinds of intimate details excluded in a general overview or profile of a person's life.