Which of the following statements is TRUE?"occupational self-direction" implies doing work that involves limited thought, initiative, and independent judgment."occupational self-direction" implies doing work that is closely supervised, and routine."occupational self-direction" significantly enhances cognitive ability (measured intelligence) -"significance" being used here in the statistical senseoccupational self-direction and social class/socioeconomic standing are not significantly correlated -"significance" being used here in the statistical sense