Final answer:
Slayer's most well-known song is "Raining Blood," a quintessential thrash metal track from their 1986 album Reign in Blood, celebrated for its aggressive guitar work and fast-paced rhythm.
Step-by-step explanation:
One of Slayer's most well-known songs is "Raining Blood." This track is an essential part of heavy metal history and is often cited as a masterpiece of the thrash metal genre. Released in 1986 on the album Reign in Blood, "Raining Blood" is famous for its aggressive guitar riffs, fast-paced rhythm, and dark lyrical content. It has become a staple in Slayer's live performances and is frequently used in media and pop culture to represent the intensity of the thrash metal scene.