Final answer:
Book value represents the purchase price minus the accumulated depreciation, and taxes are based on the difference between the book value and the sales price of the asset.
Step-by-step explanation:
The correct statements regarding the relationship between book value, sales price, and taxes when a firm sells a fixed asset are:
- Book value represents the purchase price minus the accumulated depreciation.
- Taxes are based on the difference between the book value and the sales price of the asset.
So, options a) and d) are true.