Which of the following terms refers to a hiding place or something that is stored?

The term "cache" specifically refers to a hidden storage space where items are kept for future use, often used in contexts like technology to describe stored data or in treasure hunting to describe a stash of valuables. This word conveys the concept of concealment and storage effectively, making it the most appropriate choice among the options provided.

In contrast, "clasp" refers to a fastening device, often used to secure two parts together, like a jewelry clasp. "Clad" describes something that is coated or covered, usually with a layer of another material, which does not relate to the idea of storage or hiding. Lastly, "caption" denotes a title or a brief explanation accompanying an illustration or photograph, unrelated to the concept of concealment or storage. Thus, "cache" is uniquely aligned with the definition of a hiding place or stored items, making it the correct answer.