Ergo industries, which manufactures automotive parts, had taken carious measures to improve the quality of the products. The product-line mangers at the company had the authority to stop production if they found the components to be defective without the approval of the senior management in the company and to take measures to resolve the issue. This authority motivated the mangers to perform their jobs better. According to hackman and oldham work design model, which of the following core job characteristics is influencing the performance of managers in the above scenario? a. Skill variety
b. Autonomy
c. Task identity
d. Task significance