...a type of commitment in which the parents of a boy and agirl agreeon having them marry.
According to the information available on this excerpt, a betrothal is a promise which can be later modified, in which the parents of a boy and a girl promise to marry them. This could also be a definition of arranged marriage.
Answer: Behaviours that are considered to be inappropriate, concerning or threatening include: angry, aggressive communications (verbal or written) ... a noteable change in a student's behaviour that is cause for concern. stalking (repeated attempts to impose unwanted communication or contact)
Explanation: