Concept:Memory that holds information for a brief period (20–30 seconds) is called short‑term memory or working memory. It has limited capacity and fades quickly without rehearsal.
Explanation:- The human memory system is divided into sensory memory, short‑term memory, and long‑term memory.
- Short‑term memory can store about 5–9 items for a few seconds to about 20–30 seconds unless actively maintained.
- Information in short‑term memory is easily lost if not rehearsed or transferred to long‑term memory.
- Long‑term memory holds information indefinitely, rote memory refers to mechanical repetition, and “active memory” is not a standard classification.
- Therefore, the memory that lasts for 20–30 seconds is short‑term memory.
Answer:B. Short term memory