Heat is a form of energy transfer from a blank location

Heat is the transfer of thermal energy from a system to its surroundings or from one object to another. This transfer of energy is from the object at a higher temperature to the object at a lower temperature.

Explanation:

the energy to form plasma comes from heat or electricity in the atmosphere!

sunny~ ☺

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.