Parallel Arrangement of Bulbs in a Circuit

Can you tell the advantage(s) of such an arrangement now?

For the same number of batteries in each circuit for a fair comparison, we can see that:

1) When bulbs are added in parallel, the brightness of the bulb will be the same, in the same circuit and for a simple circuit with 1 bulb and 1 battery.
2) The individual bulb in parallel is  brighter than the bulb in series.

Hope that helps!
When in doubt, just use the software to clarify first! Have fun!