Yuri Gagarin was

Yuri Gagarin was Correct Answer both (a) and (b)

Yuri Gagarin was a Russian cosmonaut & became the first man to travel in space and the first person to fly at great height of about 340 km from the earth. Yuri Alekseyevich Gagarin (9 March 1934 – 27 March 1968) was a Soviet Air Forces pilot and cosmonaut who became the first human to journey into outer space, achieving a major milestone in the Space Race; his capsule Vostok 1 completed one orbit of Earth on 12 April 1961.