A、Economic reason. B、Business reason. C、Political reason. D、Religious reason. B

Bush was born on July 6, 1946, in New Haven, Connecticut, the first child of the family. His grandfather, Prescott Bush, was a Wall Street financier who was elected to the Senate of the United States from Connecticut in 1952. Although his father began his career in the oil industry, he eventually served as a congressman.
    At the age of two, Bush moved with his parents from Connecticut to Odessa, Texas, where his father embarked on a career in the petroleum business. After a year in Texas, the family moved to California for business reasons. A year later, the family moved back to Texas and settled in Midland, a town in western Texas legated about 500 km (300 mi) from Fort Worth. Bush lived in Midland from 1950 to 1959. He had three brothers Jeb, Neil, and Marvin, and a sister, Dorothy. In 1959, again for business reasons, the family moved to Houston, Texas. In 1961 Bush left Texas and went to Andover, Massachusetts, to attend Phillips Academy, a boarding school that his father had also attended.
    At Phillips, Bush played basketball, baseball, and football. He was best known for being heed cheerleader. In 1964 he enrolled at Yale University in Connecticut; his father and grandfather had also attended Yale. That same year, Bush campaigned for his father in his unsuccessful bid to win a U.S. Senate seat from Texas.
    At Yale, Bush was considered an average student, but he was popular with his classmates. During Bush’s time at Yale, college students all over the country began to hold protests about a variety of issues, including protests against U.S. involvement in rite Vietnam War (1959-1975). Bush was uncomfortable with the growth of the student protest movement, and he generally refrained from participating in campus polities. In 1968 he campaigned on behalf of his father, who was running for reelection for a seat in the House of Representatives that he had won in 1966.