What was the ultimate reason behind the defeat of the Spartans in the Battle of Thermopylae? a. The Spartans were outnumbered. c. The Spartans had a traitor in their ranks. b. Xerxes army had better weapons and armor. d. The Spartans gave up.

the answer is c

Explanation:

because the Spartans were fierce warriors and were probably the strongest and toughest men of all time, since they fight since they're childhood. They never give up, because for them it's an honor for them to die in battle. The Spartans traitor did'nt really do anything, he just brought the fight, but he didn't cause them to lose. Xerxes army, if it was evenly matched, would've been demolished, since Spartans kill wolve as children, and fight in war since they're teen years. They were simply outnumbered

b i think hope im right