Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 40 to 49.On 26^th May 1828, the people of Nuremberg in Germany found a teenage boy who waswandering alone through the streets. When they came across him, he had no possessions except for two old letters. Because of his behavior and appearance, they took him to the police station. Kaspar spent the next two months in prison, where he hardly spoke ...

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 40 to 49.

On 26^th May 1828, the people of Nuremberg in Germany found a teenage boy who waswandering alone through the streets. When they came across him, he had no possessions except for two old letters. Because of his behavior and appearance, they took him to the police station. Kaspar spent the next two months in prison, where he hardly spoke and refused all food except for bread and water. Some people assumed that Kaspar had grown up alone in the forest, like a wild animal. But gradually, a different picture emerged.

Kaspar said he had spent his whole childhood in a small dark cell. He had never seen the world outside or left his cell. He had never met or spoken to another human being. The cell was empty apart from a small bed and one toy-a wooden horse. He claimed that he had found bread and water in his cell every morning. According to Kaspar’s account, a mysterious man had begun to call on him shortly before his release. The man never showed his face.

Kaspar became well-known throughout Germany and in other countries too, and people found his ascinating. Some suggested that Kaspar was the son of a rich and powerful man-a prince perhaps-who wanted to keep his identity secret. A schoolteacher called Friedrich Daumer met Kaspar and agreed to look after him. Daumer taught him various subjects and encouraged Kaspar’s talent for drawing.

One day in 1829, Kaspar was found with a knife wound to his head. He claimed that a man with a hood over his face had attacked him-the same man who had brought him to Nuremberg. It wasn’t a serious injury, and Kaspar got over it. But in 1833, Hauser came home with a deep knife wound in his chest, saying someone had attacked him in a garden. Three days later, Kaspar died from the wound. Just before he died, Kaspar told the police that his attacker had given him a bag, so the police went to the garden and looked for it. They found it, with a note inside. The note was in mirror writing and said in German: “I want to tell you about myself. I come from the Bavarian border, on the river.”

Over the years, books have been written about Kaspar’s stories and various historians have looked into them. Most have concluded that the stories were untrue and that Kaspar Hauser was a liar who killed himself (possibly by mistake). But for some people, Kaspar Hauser’s life and death remain one of the most mysterious stories in history

According to this passage, the phrase “call on” refers to .