The correct options are
B Neil Armstrong
D Buzz Aldrin
∙ Neil Armstrong and Buzz Aldrin were the first two people to step on the Moon.
∙ They went to the Moon during the Apollo 11 mission.
∙ Apollo 11 was the first mission to the Moon.
∙ Neil Armstrong, Edwin "Buzz" Aldrin and Michael Collins were the astronauts on Apollo 11.