Soprano
Tenor
Baritone
Bass
In classical opera, male and female voices are distinguished mainly by the range they cover, i.e. how low or high they can reach. So a bass sings in the lowest register and the soprano in the highest, while there are intermediate voices, such as mezzo soprano, alto, tenor, baritone, etc.
Listen to the voices below and, depending on their register, place them in the right order from highest to lowest.