A scientist discovers a chemical in certain rocks that kills…

A scientist discovers a chemical in certain rocks that kills bacteria when it is mixed with sterile water in a test tube. She cannot market extracts that contain this chemical as a dietary supplement because it _________blank. does not contain dietary ingredients has to receive a U.S. patent before the FDA will approve its use contains more than one kind of natural material must first undergo scientific testing to determine its effectiveness

You are very nervous to present your first speech. However,…

You are very nervous to present your first speech. However, after the speech, four people tell you that you did a good job, and one tells you that you looked nervous. If you focus on the comment from the person who told you that you looked nervous and ignore the positive comments from others, what is this called?