In medium-sized stars such as the Sun, nuclear fusion almost always means the fusing of Anuclei to form B , but larger stars can produce elements as heavy as C A. helium
hydrogen
nitrogen

B. hydrogen
lithium
helium

C. Copper
silver
iron

The soviet union beat the us to the first successful launch, with the october 4, 1957, orbiting of sputnik 1, and later beat the us to have the first human in earth orbit, yuri gagarin, on april 12, 1961. the "race" peaked with the july 20, 1969, us landing of the first humans on the moon with apollo 11

What are the choices