I think this is based on your opinion rather than facts so you can use what you know to give your OWN opinion シ
...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.
Who's Elisa, and what book and/or passage are you reading? Nobody can answer without that context.
Answer:
C)metaphor
Explanation:
Metaphor - A figure of speech that describes a subject by asserting that it is, on some point of comparison, the same as another otherwise unrelated object.
Hyperbole - Exaggerating statements or claims that are not to be taken literally.
Personification - The attribution of a personal nature or human characteristics to something nonhuman, or the representation of an abstract quality in human form.
Alliteration - The occurrence of the same letter or sound at the beginning of adjacent or closely connected words.