Final answer:
BMW unwittingly dismantled an effective high-performance work system in Land Rover.
Step-by-step explanation:
The British car company in which BMW unwittingly dismantled an effective high-performance work system is a. Land Rover. In 1994, BMW purchased Rover Group, which included the Land Rover brand. However, BMW struggled to integrate the British company into its operations, resulting in the dismantling of the work system that had previously been successful at Land Rover.