Final answer:
A bonnet is a type of hat mentioned in the glossary as 'a girl's hat,' which indicates that it is worn on the head. It is traditionally worn by girls and women and is designed to protect the hair from weather elements. The correct option is 3. on her head.
Step-by-step explanation:
A bonnet is a type of hat worn traditionally by girls and women. According to the provided glossary, a bonnet is described as 'a girl's hat,' indicating that it is an accessory that is worn on the head. In historical and some contemporary contexts, bonnets are headcoverings that protect the hair from the wind and weather, and they often have ties beneath the chin to keep them in place. The passage suggests a bygone era when such bonnets were more commonly part of a woman's attire.
From the options given, a bonnet being blown off by a gust of wind and the reference to it as 'a girl's hat' make it clear that the bonnet is worn on the head. Therefore, the correct answer to the question 'Where does a girl wear a bonnet?' out of the provided options is 'on her head'.