Answer:
The exposition
Explanation:
Its provides the background information, introduces the main characters, and establishes the problem.
Why are you asking about this
HAIIII I BELIEVE ITS OPTION C !!! It seems to be the best out of all of them
...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.