Final answer:
The primary benefit of automatic adjustments for inflation is expeditures fluctuating with demand.
Step-by-step explanation:
The primary benefit of automatic adjustments for inflation is that expenditures fluctuate with demand, which is usually closely related to company income. When prices rise due to inflation, the automatic adjustments in contracts allow for increased prices, ensuring that companies are able to cover their costs and maintain profitability. On the other hand, if prices fall due to deflation, the automatic adjustments will lower the prices, preventing companies from overcharging customers.