Concept:Memory is classified by duration. Short-term memory holds information for about 20–30 seconds.
Explanation:The type of memory that retains data for a brief period (20–30 seconds) is short-term memory.
It has a limited capacity, typically around 7 items.
If not actively rehearsed, this information is easily forgotten or transferred to long-term memory.
Long-term memory stores information permanently, not just for seconds.
Active memory is another term for working memory, which overlaps with short-term memory but involves manipulation.
Rote memory relies on repetition, not on a fixed 20–30 second retention.
Thus, the correct answer is short-term memory.
Answer:Short term memory (Option B)