can shepard survive in mass effect 3?

Answer 1

yes shepard can live but you have to meet certain criteria for this to happen

 

To get the “Perfect” Ending in Mass Effect 3, play the game with the New Game+ option or with an imported character from ME2, with an achieved 4000+ EMS rating and choose the Red, or Renegade Option. With 4000+ EMS you must rescue Anderson from the Illusive Man’s execution. With 5000+ EMS, you can rescue Anderson or let him die. This ending comes after a short post-credits conversation between a man and child.