Dr. Hagen, a superintendent of Adams School District, studies the reading scores of second graders. ...

Dr. Hagen, a superintendent of Adams School District, studies the reading scores of second graders. This situation is an example of which type of source?
 
  A) Primary
  B) Secondary
  C) Tertiary
  D) Quaternary

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After her 10th birthday, Elsa writes a flowery description of her party, including the guests, the gifts, and the games they played. This situation is an example of which type of source?
 
  A) Primary
  B) Secondary
  C) Tertiary
  D) Quaternary

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Brynn witnesses a wildfire starting near her home. She draws a picture of the wildfire. This is an example of which type of source?
 
  A) Primary
  B) Secondary
  C) Tertiary
  D) Quaternary