Which of the following statements best describes the relationship among the three sanctioned forms of reliability evidence?
A. All three types of evidence are essentially equivalent.
B. Est-retest reliability evidence is more important than either internal-consistency evidence or alternate-form evidence.
C. The three forms of evidence represent fundamentally different ways of representing a test's consistency.
D. The three forms of evidence differ in their significance because internal-consistency evidence of a test's reliability is a necessary condition for the other two types of consistency.
C
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