Explain the difference between a neutral atom and a stable atom

Explanation:

A neutral, or stable, atom is composed of an equal amount of three components: protons, neutrons, and electrons. Protons have a positive electrical charge, neutrons are neutral, and electrons have a negative charge. ... Hydrogen atoms, and all metals, seek out electrons to balance that net positive charge.

In  industry   Ammonia  is  made  by  haber process(answer  c)

Haber   process  is an industrial  process  for producing  Ammonia  from nitrogen  and  hydrogen.This  process  using  iron catalyst  at  high  temperature  and  pressure. This process  combine   nitrogen  from  air  with  hydrogen  derived  from  natural  gas.This  reaction  is  reversible and  production  of  ammonia   is  exothermic that is  heat  energy is  released.