Three Research Assistants Were Assigned the Task of Counting the Number

Multiple Choice

Three research assistants were assigned the task of counting the number of times a particular student exhibited inattentive behaviors during a 30-minute math class. The first research assistant counted five inattentive behaviors, the second recorded eight, and the third observed only two. Assuming the three research assistants are equally accurate in what they observed, the most likely explanation for this discrepancy in recordings would be that the inattentive behavior

A) was not the correct hypothesis.
B) was not observed for a long enough period of time.
C) was not precisely operationally defined.
D) would require at least five observers for an accurate count.