You're on K12 haha :0
I think it's the second answer choice but not sure. Sorry if I'm wrong
The moment sun will die planet Earth will leave it's orbit exactly 8 minutes and 42 seconds later.
And then will go on wondering forever in the cold surrounding of universe till it's not captured into another stellar system which seems to be a little hard to imagine.
The answer is cell membrane
It reproduces asexually have a nice day