In an operating system, indivisibility of operation means:

Answer: processor can not be prempted

Reason: Indivisibility (atomicity) means an operation executes as a single, uninterruptible unit. The operation cannot be preempted or observed in a partial state by other processes.

• Because the operation is not preempted, other processes cannot interleave with it.

• This prevents race conditions that arise from concurrent interleaving of operations.

• Therefore, the statement that the processor cannot be preempted correctly captures the meaning of indivisibility.