Main sequence stars are responsible for the formation of many elements. Which of the following best describes the process that forms these elements ? A
Energy is consumed to break heavy elements into hydrogen and helium
Reactive molecules combine with oxygen in a combushin reaction.
B.
CO
Fusion causes isotopes of hydrogen to combine into helium, releasing energy and neutrons
D.
Subatomic particles are drawn together by gravity, producing radioactive decay.

B? i feel like this is a trick  

H tricky one let me think and get back to u

Electron equations of the given changes are as follow,a)                              cu      →      cu⁺²  + 2e⁻b)                              mg⁺²  +  2 e⁻      →      mgc)                              cl⁻    →      cl  +  1e⁻d)                              s  +  2 e⁻    →      s²⁻e)                                o²⁻      →      o  +  2 e⁻f)                              p  +  3 e⁻    →      p³⁻g)                              fe²⁺    →      fe³⁺  + 1 e⁻h)                              s²⁻    →      s⁴⁺  +  6 e⁻