How many bronze stars are worn on a ribbon for the third awarding?

The correct response is that two bronze stars are worn on a ribbon for the third awarding. Each bronze star represents an additional award of the same medal or ribbon, so when a service member achieves a third award, they wear two bronze stars to signify this. The first award does not involve wearing any stars; the second award is indicated by one bronze star, and by the time a third award is granted, two stars are worn to represent the cumulative supplementary recognition. This system is used to visually denote the number of times an award has been earned, allowing for quick recognition of the individual's accomplishments in a military context.