...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.
Annie's past tells us that she was a little bit like Helen.
The way Annie deals with Helen shows us that Annie had a lot of patience.
The most common purposes in academic writing are to persuade, analyze/synthesize, and inform. Its purpose is to aid the reader's understanding.
Being disciplined at the workplace helps us to complete all the important tasks and responsibilities well on time. And when they are completed on time, stress levels don't arise at all. Plus it helps us elevate our productivity levels and quality parameters as we have more time in hand.
I would think novels focus on character development