Select one of the situations below and describe what type of evidence it represents: content-related, criterion-related, or construct-related. Explain your answer.

(a) Ninety percent of the students who score high on a biology test receive A's as end-of-the-semester grades in biology.

(b) A professor of ancient history at a large university looks over a test to measure student knowledge of Greek and Roman civilizations and states that, in his opinion, the test measures such knowledge.

(c) A researcher discovers that students who score high on a teacher-made test of writing ability also receive high marks in writing courses. She finds that they are also rated high in writing ability by their teachers, and that when they are asked to write a letter, they prepare one that two writing instructors independently judge to be clear and grammatically correct.

(d) A typing instructor receives a letter from the local office of a large corporation stating that several of his recently hired students are "excellent typists" on the job. In checking his records, the instructor finds that all but one of these students scored high on his end-of-the-year typing test.