I believe your answer is number 2.
Correct me if I am wrong. :)
Answer:
Answer below
Explanation:
For every action there is an reaction
Life is complex so it depends on what the problem is and depending on how big the problem is, it can affect other things very small like how someone looks at you.
For example you tell becky her breath stinks, she'll look at you different because she thinks your being mean but your just being honest, instead you could have just left it alone and she wouldn't have said anything at all.
This isn't neccessarily true. Your introduction can still make sense without the hook, and the information inside the introduction part should really not directly depend on the hook to explain them, they should either be self explanatory, or you should explain them there.
Hopefully this helps!