B. Reducing balance method

Explanation:
The reducing balance method is commonly used for depreciating tools and equipment because it allocates a higher depreciation expense in the earlier years of an asset’s life when the asset is expected to be more productive. This method reflects the pattern of use and wear on tools better than the straight-line method, which spreads the expense evenly over the asset’s useful life. As tools may become less efficient as they age, the reducing balance method appropriately matches the expense with the revenue generated during the asset’s productive years