Which of these is a non-durable good?

A non-durable good is defined as an item that is consumed or used up quickly, typically within a short period of time or during a single use. These goods do not last long and are often items that are purchased frequently and require replenishment.

In this context, a sandwich is considered a non-durable good because it is perishable and meant to be consumed immediately or within a short time frame. Once eaten, it cannot be used again, which aligns perfectly with the characteristics of non-durable goods.

On the other hand, items like smartphones, chairs, and cars are durable goods. These goods are typically designed for long-term use and have a longer lifespan, often lasting several years before they need to be replaced or discarded. The characteristics of durability in these goods contrast sharply with that of a sandwich, solidifying the sandwich as the correct answer in identifying a non-durable good.