Question: Read the article and select the best answer. Article: Sally Ride was born in California in 1951. She was the first American woman to travel into space. She loved to play tennis and wanted to be a tennis player when she was young. But after three months' professional training, she changed her mind. She went to Stanford University and started to study science. She studied stars and planets. She did researches at the university and got her PhD in astrophysics after several years' hard work. In 1977, she took a test to become an astronaut. And then she was picked up from over 8,000 people. In order to realise her dream of going into space, she had to get different kinds of special and difficult training. She learned how to fly a plane, how to jump out of a plane as well as how to operate special machines Sally and four other astronauts flew a spaceship called Challenger on Jun. 18, 1983. She became the first American woman to travel into space. Later, she taught at the University of California. Then she wrote seven books on space for children, encouraging children to study science. Unfortunately, she died in 2012. Question: Sally Ride taught at the University of California _ . Options: A: before she got her PhD in astrophysics B: before she went to Standford University C: after she wrote books on space D: after she travelled into space
Answer:
D