The purpose of a hook in an intro is to grab the reader's attention.
Another way is to say " a lot of money for the bride"
The author conveys the joy in the excerpt given above through the use of ALLUSION.
Allusion is a figure of speech, in which an individual indirectly refer to an object or a situation from an external context; allusion usually refers to a story, object, person or event that is well known in order to make readers to make comparisons in their minds. For instance, a writer can make an allusion to the story of David and Goliath in order to establish his belief that an unlikely person may end up wining a particular fight.
D. The author is using understatements. This is a common technique when talking about something fairly serious or upsetting, as it creates a shocking response.
Lets start with what information you have. You have the topic Foster children and juveniles. The next step would be a thesis or the purpose of your study. The introduction should take all the major ideas you will talk about in your paper. Hope this helps to give you a start on your research paper. Post a comment if you have any more questions. Enjoy the rest of your day :)