The correct answer is C. Becoming the first female justice on the US Supreme Cort.
Explanation
Sandra Day O'Connor is a woman who stood out in the United States for a broad career in the legal field of the country, her career began in 1975 when she was appointed as a Judge of the Superior Courts of the state of Arizona, after several years in This position also held that of Judge of the Court of Appeals of the state of Arizona since 1979. But the great leap in her career was when President Ronald Reagan allowed her to enter the Supreme Court in 1981, a position she held until the year 2006. Due to her extensive wanderings in the legal field, she is one of the most prominent women on these issues, and also stands out for being the first woman to be on the Supreme Court. Therefore, the correct answer is C. becoming the first female justice on the US Supreme Court
