Final answer:
The leather in BMW car seats is a final good, as it is the end product used by the consumer and not sold as a component of another good.
Step-by-step explanation:
The leather used for the car seats in a BMW car is considered a final good. This categorization is because the leather is not going to be resold as part of another product but is instead the final product used by the consumer in the car.
An intermediate good would be a product that requires further processing or is included as a component in another product before reaching the end consumer, which does not apply to car seats in their final form. Therefore, the correct answer is B. Final good.