Final answer:
Patroclus was killed by Hector, who mistook him for Achilles during the Trojan War.
Step-by-step explanation:
In Greek mythology, Patroclus was killed by Hector, who mistook him for Achilles during the Trojan War. Patroclus was the close friend and companion of Achilles. He wore Achilles' armor to lead the Myrmidons into battle, and it was during this time that Hector struck him down, thinking he was Achilles.The story of Patroclus' death is told in Homer's Iliad, an epic poem about the Trojan War. It showcases the tragic consequences of mistaken identity and the toll of war.
So, the correct answer is a) Hector.