In the following output, what was the maximum number of processes swapped out at any time?

In system performance monitoring, 'swapped out' activity is typically indicated by metrics like the 'so' column in `vmstat`, which shows the amount of memory swapped out per second. If the 'so' value (or equivalent) consistently remains at 0, it signifies that no processes or parts of processes were moved from RAM to swap space, making 0 the maximum.

A value of 1 would imply that at least one process was swapped out, which contradicts the zero swap-out activity suggested by the correct answer.

A value of 2 would imply that at least two processes were swapped out, which contradicts the zero swap-out activity suggested by the correct answer.

A value of 8 would imply significant swap-out activity, which contradicts the zero swap-out activity suggested by the correct answer.

A value of 27 would indicate substantial swap-out activity, which contradicts the zero swap-out activity suggested by the correct answer.