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

Since in the question it is mentioned that the industries would take measures so that the products quality could be improved. The product line managers has the authority to stop the production in the case when there is a defective components without taking the approval of the senior management

So here the characteristics that impact the performance of the manager is autonomy as it means the freedom of an employee to finish the work so that they are able to do better work