Which of the following is a gorget?

A gorget, from the French gorge meaning throat, was a band of linen wrapped around a woman's neck and head in the medieval period or the lower part of a simple chaperon hood. The term later described a steel or leather collar to protect the throat, a set of pieces of plate armor, or a single piece of plate armor hanging from the neck and covering the throat and chest. Later, particularly from the 18th century, the gorget became primarily ornamental, serving as a symbolic accessory on military uniforms, a use which has survived in some armies.

The term may also be used for other things such as items of jewelry worn around the throat region in several societies, for example wide thin gold collars found in prehistoric Ireland dating to the Bronze Age.