Which type of wave needs a medium to travel?(1 point)Responsessound waves, because they travel by oscillating electromagnetic fieldssound waves, because they travel by oscillating electromagnetic fieldssound waves, because they travel by oscillating moleculessound waves, because they travel by oscillating moleculeslight waves, because they travel by oscillating moleculeslight waves, because they travel by oscillating moleculeslight waves, because they travel by oscillating electromagnetic fields
