Karl Benz was born in Germany. He was the inventor of the first practical modern automobile. His father died in an accident when Benz was two years old. Although the family was poor, his mother supported him, so he got a good education. He graduated from the university and became a mechanical engineer. Benz invented the first gas-powered car. But nobody took any notice of the car until his wife Bertha and his two young sons took it without asking and made a long journey to visit grandma. Bertha needed to make some repair on the way. The successful trip showed Benz how to improve the car. Karl Benz officially registered the three-wheeled Motor Car called "Motorwagen" in 1886. Later Benz completed his four-wheeled car in 1893. He died in 1929, just two years after his fellow car-maker joined Daimler company and formed Daimler Group, manufacturer of the Mercedes-Benz. 3. The underlined pronoun "ir" in the passage refers to A) an accident D) a trip B) a car E) a wheel C) education