Aaron, an HR manager, observes that the number of employees quitting their jobs has been steadily increasing over the last six months. On closer inspection, he finds that a majority of the employees who quit were unhappy with the pay structures. Aaron assesses the significance of each job to the organization, which helps him set up fair pay structures. This in turn helps the organization retain valuable employees. Which of the following most likely relates to the task undertaken by Aaron?a. Job evaluationb. Career planningc. Job trainingd. Performance appraisal