Which one of the following statements regarding the Microskills Hierarchy is NOT true?

a. The Ivey Taxonomy and the Microskills hierarchy represent a systematic breakdown of
the key skills required for intentional interviewing.
b. The Ivey Taxonomy and the Microskills hierarchy provide fairly consistent predictions of
client responses to accurate interviewer execution of a specific skill.
c. The Ivey Taxonomy and the Microskills hierarchy provide flexibility for the interviewer
when the unexpected occurs.
d. The Ivey Taxonomy and the Microskills hierarchy, with experience, become automatic
and allow you to always predict client responses to accurate interviewer use of the skills.

The authors of the paper "fudging the numbers: distributing chocolate influences student evaluations of an undergraduate course"† carried out a study to see if events unrelated to an undergraduate course could affect student evaluations. students enrolled in statistics courses taught by the same instructor participated in the study. all students attended the same lectures and one of six discussion sections that met once a week. at the end of the course, the researchers chose three of the discussion sections to be the "chocolate group." students in these three sections were offered chocolate prior to having them fill out course evaluations. students in the other three sections were not offered chocolate. the researchers concluded that "overall, students offered chocolate gave more positive evaluations than students not offered chocolate." indicate whether the study is an observational study or an experiment. give a brief explanation for your choice.