I've never heard of a group account so I'm going with.
C. Group
Data Backup and Recovery is the procedure that protects against the loss of data. It is to protect the crucial data against losing in events like physical disaster, database corruption, hardware failures, and other incident that can cause the data to lose.
Answer:
RAM is a short abbreviation for Random Access Memory. It is the physical working memory used by your PC to temporarily store computer data. Your PC stores all open applications, files, and any other data into RAM for quick access. The more RAM you have installed, the more programs you can run at the same time.