The amount of time it'll take to grow back depends on you but the hat would work
The answer to the question above is letter "C. enables humans to live forever". Human beings, as we are, we are bound to face death when time comes and that we are not immortal. Other choices are beneficial uses of the genetic engineering.
Answer:
Well if you miss someone then tell them you miss them, even if its an ex boyfriend or an ex bestfriend. But the one thing you dont want to do is go through the pictures you have with someone or the person you miss because that will hurt like s***. And hun the world is not against you, I felt this was once before and i looked through pictures and it really hurt so dont do that and I know youre strong enough to get through this even if i dont know you I know you can get through this. Just take your time with things and surround yourself with people you love and that makes you feel happy and do the things that make you happy with the people that make you happy. If you need to talk I'm here it will be okay, trust me.