Uncertainties in the supply chain arise from all of the following except:

Question

BlackTom AI · Accepted Answer

Inventory increases across all tiers are typically a consequence of uncertainty, not an origin of it.

Relevant knowledge points: Supply-chain uncertainty refers to unpredictable variations in supply, demand, quality, and processes that make planning and fulfillment difficult. Common sources include lead-time variability (late shipments), production disruptions (machinery failure, labor issues), quality problems (defective parts or raw materials), and demand volatility (fluctuating product demand). The bullwhip effect describes how small changes in customer demand amplify upstream, causing larger swings in orders and inventory levels across tiers.

Step-by-step reasoning:
1. Interpret each option against the definition of "uncertainty" (an unpredictable cause).
2. Late shipments from suppliers introduce lead-time variability and unpredictability in when materials arrive — this is a classic supply uncertainty.
3. Defective parts or raw materials cause unpredictable scrap/rework and quality failures — a quality uncertainty.
4. Production process breakdowns (equipment failure, outages) create unpredictable capacity loss — a process uncertainty.
5. Fluctuating product demand is demand-side uncertainty directly affecting forecasts and planning.
6. Increases in inventory across all tiers, however, are an outcome: firms raise safety stock or place larger orders to buffer against the above uncertainties. Inventory buildup is a symptom or mitigation response (and can be amplified by the bullwhip effect), but it is not itself an unpredictable source causing uncertainty.

Why the correct answer is correct: "increases in inventory across all tiers" represents a reactive state resulting from supply, demand, quality, or process uncertainties. It does not originate uncertainty; it reflects firms’ strategies to cope with it.

Why the other options are incorrect: each of the other four (late shipments, defective parts, production breakdowns, fluctuating demand) are direct causes of unpredictability in the supply chain.

Conclusion: Therefore, the exception is increases in inventory across all tiers, which matches the provided correct answer.

Uncertainties in the supply chain arise from all of the following except: 单项选择题

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