2.
Read the sentence and answer the question.
In 1978, NASA changed the organization of the astronauts 20 mission specialists and 15 new pilot astronauts were chosen.
Which correctly shows where a semicolon is needed in the sentence?
A. In 1978, NASA changed the organization of the astronauts; 20 mission specialists and 15 new pilot astronauts were chosen.
B. In 1978, NASA changed the organization of the astronauts 20 mission specialists and 15 new pilot astronauts; were chosen.
C. In 1978, NASA changed the organization of the astronauts 20 mission specialists and 15; new pilot astronauts were chosen.
D. In 1978, NASA changed the organization of the astronauts 20 mission specialists; and 15 new pilot astronauts were chosen.