In a car assembly plant, division of labour is demonstrated by

Division of labour in a car assembly plant means breaking down the process of making a car into smaller tasks or activities and assigning each worker to do a specific task repeatedly. This specialization helps increase efficiency, speed up the production process, and improve the quality of the final product. For example, one worker may be responsible for installing tires, while another may be responsible for installing the windshield. This division of labour allows workers to become experts at their specific task, leading to a higher quality end product, increased productivity, and overall cost savings for the company. Therefore, the correct answer is assigning each worker to a specific activity.