Answer:
Ronald McNair was nationally recognized for his work in laser physics and was one of the thirty-five applicants selected by NASA from a pool of ten thousand. In 1984, McNair became the second African-American to make a flight into space. He was a mission specialist on the space shuttle Challenger.
Explanation:
A. it is the oldest surviving culture on earth.
Christopher Columbus was the first explorer to sail what are today the Caribbean Islands between North and South America. He sailed for Spain. Hope it help!
