Pretty positive its false, don't hate me if I'm wrong, lol.
The answer to your question is true
...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.
You could drive less often by taking a bus or carpooling to reduce gas emissions. As well as using re-usable items like a metal water bottle, and your own personal bags at the grocery store.