Final answer:
Relative changes in wage rates among nations may cause the multinational firm to change its sources of supply from one country to another.
Step-by-step explanation:
Relative changes in wage rates among nations can cause a multinational firm to change its sources of supply from one country to another.
For example, if the wage rates in Country A increase relative to the wage rates in Country B, it may be more cost-effective for the multinational firm to shift its production or sourcing from Country A to Country B, where the lower wages can result in lower production costs.
This shift in sourcing can help the multinational firm maintain its competitiveness and profitability in the global market.