The correct answer is: The metal because it is a thermal conductor.
Metals are generally good thermal conductors, which means they can transfer heat quickly along their length. When one end of a metal piece is placed in hot embers, the heat will rapidly travel to the other end. In contrast, wood is a poorer conductor of heat and is typically considered an insulator, which means the heat will be transferred much slower along the length of the wooden piece. Therefore, the opposite end of the metal piece will heat up faster than the opposite end of the wooden piece.