Complex sentence: Garcia Quiroz became a Harvard College admissions officer after graduating from Harvard University, working with the minority recruitment team she assisted as an undergraduate and responsible for applicants in New York City, Texas, California, Puerto Rico and the Virgin Islands.
Split into simpler sentences: Garcia Quiroz became a Harvard College admissions officer after graduating from Harvard University, working with the minority recruitment team she assisted as an undergraduate. She was responsible for applicants in New York City, Texas, California, Puerto Rico and the Virgin Islands.