Read the reading below carefully, and then complete it with the best option A, B, C or D given below:
Neil Armstrong (1) ______ into his microphone. And in less than two seconds the message that will live in the annals of exploration flew with the (2) ______ of radio to the huge telescope dish at Honeysuckle Creek, near Canberra, Australia, thence to the Comsat (3) ______ over the Pacific, then to the switching center at the Goddard Space Flight Center outside Washington, D.C., and finally to Houston and the (4) ______ of the world: “That's one small step for a man, one giant leap for mankind.

Neil Armstrong (1) ______ into his microphone.