the inventory costing method that smooths out erratic changes in costs is: multiple choice fifo weighted…

Brief Explanations:

The weighted - average costing method calculates the average cost of all units available for sale during a period. It smooths out erratic changes in costs because it takes into account the cost of all inventory items and their quantities. FIFO (First - In, First - Out) and LIFO (Last - In, First - Out) are more affected by the timing of cost changes. Specific identification assigns the actual cost of each individual item, and WIFO is not a common inventory costing method.

Answer:

B. Weighted average