Which of the following RAID levels will allow an administrator to lose only two drives within the RAID group and not lose data?

RAID 1+0 (RAID 10) combines mirroring and striping, allowing it to tolerate multiple drive failures as long as the failures do not occur in the same mirrored pair, but it cannot necessarily tolerate any two arbitrary drive failures without data loss.

RAID A is not a standard or commonly recognized RAID level, making it an incorrect option for drive redundancy.

RAID 5 uses a single distributed parity block and can only tolerate the failure of one drive within the array; if a second drive fails before the first is replaced and rebuilt, data will be lost.

RAID 6 utilizes two independent parity blocks for data recovery, providing a higher level of fault tolerance. This dual parity allows a RAID 6 array to withstand the simultaneous failure of any two drives without losing data or experiencing downtime.