**Answer:**

The correct answer is option D) Luigi.

**Explanation:**

In the story "Two Gentlemen of Verona" by A.J. Cronin, the narrator's driver's name is Luigi. Luigi is a reliable and trustworthy driver who works for the narrator and his friend, Nicola. He is described as a middle-aged man with a pleasant demeanor.

Throughout the story, Luigi plays an important role in the lives of the two gentlemen. He is responsible for driving them around Verona and helping them with their daily tasks. Luigi is not just a driver but also a friend to the narrator and Nicola. He is always there to lend a helping hand and offer his support whenever needed.

Luigi's character is portrayed as hardworking and dedicated. He takes pride in his work and ensures that the narrator and Nicola are well taken care of. He is punctual and efficient in his duties, making him an invaluable asset to the two gentlemen.

Luigi's presence in the story also highlights the class differences between the narrator and Nicola, who belong to the upper class, and Luigi, who belongs to the working class. Despite the differences in their social status, Luigi is treated with respect and dignity by the two gentlemen. This demonstrates the strong bond of friendship and mutual respect that exists between them.

In conclusion, Luigi is the name of the narrator's driver in the story "Two Gentlemen of Verona". He is a loyal and dependable character who plays a significant role in supporting the narrator and his friend throughout the narrative.