Which of the following is a form of presentation delivery in which you are fully prepared but only use an outline or notes to guide you through your presentation?

A speaker who presents the topic ,"How a pearl is formed," is demonstrating

a. how something works b. how something is made c. how something happens d. how something is done

Mason has terrible tinnitus, or ringing in his ears, that makes it difficult for him to listen. Mason’s tinnitus is an example of ______.

a. physical noise b. semantic noise c. physiological noise d. psychological noise