HRM, as a body of concepts and practices, rests on the unitarist perspective. Among the main topics studied during the semester (EEO, Job Analysis and Design, Recruitment and Selection, Training and Development, Performance Management, Career Management, Rewarding Employees, Employee Relations, Occupational Health & Safety and Coaching), identify three that contradict or support the unitarist perspective. Explain what is the unitarist perspective and justify your selection.