Final answer:
The bullwhip effect occurs when small fluctuations in consumer demand cause progressively larger oscillations in orders through different levels of the supply chain, leading to significant inefficiencies and excess inventory.
Step-by-step explanation:
The phenomenon described in the scenario where a retailer orders more products anticipating a demand spike, which causes the distributor to order even more from the manufacturer, and subsequently the manufacturer to increase orders from suppliers, eventually leading to a glut of goods when the actual demand increase is minimal, is best known as the bullwhip effect. This term refers to the amplification of demand fluctuations, not because of actual consumer demand, but due to each layer of the supply chain's ordering patterns and attempt to forecast demand. Each level in the supply chain increases their stock based on the demand they observe, which can be significantly different from the actual consumer demand, causing inefficiencies and excess inventory.