Which term describes a cluster or collection of excess items?

The term that best describes a cluster or collection of excess items is "surplus." This word specifically refers to an amount that is greater than what is needed, indicating an excess. In various contexts, a surplus often implies a positive aspect, such as having more resources, goods, or items available than are necessary for a particular use or situation. For example, if a store has more inventory than it can sell, that extra inventory is considered a surplus.

In contrast, other choices describe conditions of scarcity or need. "Abundance" does convey a large quantity, but it does not necessarily imply an excess compared to a requirement. "Paucity" indicates a scarcity or small number of items, while "deficiency" refers to a lack of necessary items or an insufficiency. These terms highlight a deficiency rather than an excess, clarifying why "surplus" is indeed the correct term for a collection of excess items.