Explanation: Dynamic Random-Access Memory (DRAM) is the memory type described. DRAM stores each bit of data in a separate capacitor within an integrated circuit. Because these capacitors inherently leak their electrical charge over time, the data stored in a DRAM cell must be periodically "refreshed" – read and then rewritten – to prevent data loss. This constant refreshing process is why it's called "dynamic." In contrast, Read-Only Memory (ROM) and Programmable Read-Only Memory (PROM) are non-volatile memory types; they retain their data even when power is removed and do not require periodic refreshing. While PRAM could refer to several emerging memory technologies, it is not the standard term for a random-access memory that specifically requires periodic refresh to maintain data like DRAM does.