What is the name of the gladiator who drove a horse-drawn chariot?

The correct choice refers to the term "essedarius," which specifically describes a type of gladiator who fought from a horse-drawn chariot. In the context of ancient Roman spectacles and gladiatorial games, essedarii were known for their mobility and ability to engage in combat while being elevated in a chariot, thereby allowing for unique tactical advantages during battles. This type of gladiator brought a different dynamic to the arena, contrasting with those who fought on foot.

The other terms represent different classifications of gladiators: Thrax refers to a type known for their use of a curved sword and a shield; Secutor is another category, characterized by their heavily armored costume and specific fighting style, typically facing off against more agile opponents; Myrrhillo refers to certain gladiators specialized in combat that often required agility and speed. Each of these has distinct roles and equipment associated with them, setting them apart from the essedarius, who specifically represented the chariot-fighting style in the arena.