All of the following are techniques to minimize or catch the problem of response sets on self-report questionnaires EXCEPT

a. Some tests include a statement such as “the world is good place” and, later, its opposite, “the world is bad place.”
b. A questionnaire can be constructed so that on one half of the questions a high rating indicates the presence of a trait while on the other half a low rating does.
c. A “lie” scale can be included that consists of very unlikely responses that almost no one would choose.
d. Some tests start with a statement that suggests that anything but honest responses will be detected.

Answer: d: Some tests start with a statement that suggests that anything but honest responses will be detected.