How did colin die in Harry Potter book 7?

Answer 1

Students, parents, and teachers killed them.

Answer 2

He died in the first round of the Battle of Hogwarts, presumably from the Killing Curse.

Answer 3

Colin died because even though the battle was supposed to be for seventh years and older, he joined the battle and didnt win his battle.

Answer 4

He dies during the attack at Hogwart's by the Death Eaters.