You need to explain what you need help with?
...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.
I would say that I am against the idea of using controlled fires to protect wild areas.
For one fires can very easily get out of hand, especially if the area is dry at the time that the fire is started. When and if the fire gets out of hand it would do way more harm than good to the wild life in the area.
D) They are built by the deposition of sand by wind
