Your friend asks you to describe the difference between a primary source and a secondary source. You correctly reply:. a. "A primary source can be defined as one that is written by an author who has first-hand experience of the topic or the work that is being directly written about. A secondary source is one where the author researches information and does not have first-hand experience with the topic."
b. "A primary source is the first source, and the secondary source is the second source."
c. "A primary source, for example, is a diary entry because that person has first-hand experience with the events. A secondary source is a historical document like the United States Constitution."
d. "I can give you some examples! Film reviews are primary sources, and films are secondary sources."