| [ A ]    optical disk | 
              |
| [ B ] floppy disk | |
| [ C ] RAM | |
| [ D ] hard disk | |
| [ E ] flash drive | ![]()  | 
            
| [ A ]    optical disk | 
              |
| [ B ] floppy disk | |
| [ C ] RAM | |
| [ D ] hard disk | |
| [ E ] flash drive | ![]()  | 
            
| Answer : Option E | 
| Explanation : | 
| Secondary storage, sometimes called auxiliary or external storage, is non-volatile storage that is not under the direct control of a computer's central processing unit (CPU) or does not directly interact with an application. External hard drives, portable USB flash drives, CDs, DVDs and cloud backup are often used for secondary storage. | 
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