When Hagrid took him out shopping for that first time.
No, his parents died and he survived.
The Dursleys were the closest in relation to harry potter after his parents died
His parents died to save him. He survived by his parents love.
No, he is still alive.
Harry Potter discovered that his parents were a witch and wizard and that they were murdered by Lord Voldemort. Harry had always been told that his parents died in a car crash and he had no idea they were magical.
Tonks and Lupin
He used Avada Kedavra, the killing curse because they were preventing him from getting to Harry. He didn't really care if they lived or died, Harry was the threat to him.
No, the died in their house which was in Godric's Hollow.
They died to protect Harry: if they hadn't died the whole story would be very different or maybe even not have existed. The whole concept of Harry Potter depends solely on the death of his parents.
No one was left.Sirius died in the Order of the Phoenix.His parents died in the first one so no one was really left in his family.
You an discuss if Harry really died, or if he should have.
He was taken there on Dumbledore's instructions, after his parents died. The Dursleys were Harry's only living relatives.