What device is put on a ribbon for the 4th award?

The correct choice for the device to be put on a ribbon for the 4th award is the Silver Star. In military and other award systems, stars are commonly used as devices to indicate additional achievements or awards received in a particular category. The Silver Star typically represents the second level of achievement beyond the initial award.

Therefore, when an individual has received a certain award multiple times, a Silver Star is added to the ribbon for each subsequent award after the initial one. In this case, the 4th award would merit the addition of the Silver Star as the designated device, showing how many times the award has been earned.

In some systems, a Bronze Star represents the first subsequent award, and a Gold Star may signify a higher level or distinction. The choice of two Silver Stars is typically reserved for further recognitions beyond the fourth, not for the fourth award itself. Thus, the Silver Star fits perfectly for indicating the fourth instance of an award being presented.