Explanation:

**Dynamic Random Access Memory (DRAM)** requires periodic refreshing (recharging) many times per second to maintain the data stored in its capacitors. Capacitors naturally leak charge, so without refreshing, the data would quickly be lost. This dynamic nature is why it's called 'dynamic'. * **Option A (EPROM):** EPROM (Erasable Programmable Read-Only Memory) is non-volatile and does not require refreshing. * **Option B (ROM):** ROM (Read-Only Memory) is non-volatile and does not require refreshing. * **Option C (Static RAM):** Static RAM (SRAM) uses latches (flip-flops) to store data, which do not require refreshing as long as power is supplied. * **Option D (Dynamic RAM):** This is the correct answer. DRAM's reliance on charge storage in capacitors necessitates constant refreshing.