Read the excerpt from "Aladdin and the Magic Lamp.”

But far away in Africa the magician remembered Aladdin, and by his magic arts discovered that Aladdin, instead of perishing miserably in the cave, had escaped, and had married a princess, with whom he was living in great honour and wealth. He knew that the poor tailor's son could only have accomplished this by means of the lamp, and travelled night and day till he reached the capital of China, bent on Aladdin's ruin. . . . He was determined to get hold of the lamp, and again plunge Aladdin into the deepest poverty.

Who is the protagonist?

the magician
Aladdin
the princess
the tailor