Question

it is non - volatile memory, i.e. it retains data when power is switched off
cache memory
risk access memory
bios
secondary memory

Explanation:

Secondary memory (e.g., hard drives, SSDs) is non-volatile, meaning it preserves stored data even when the device loses power. Cache memory is volatile, BIOS is firmware stored in non-volatile memory but is not a memory category itself, and "Risk Access Memory" is not a standard computing term.

Answer:

D. Secondary Memory