Which type of energy would running be? Thermal
Light (solar)
Kinetic
Potential

Thermal because it’s source is the almost unlimited amount of heat generated by the earths core. Even in the geothermal areas dependent on a reservoir of hot water, the volume taken out can be reinjected making it a sustainable energy source.

A. is your answer.  hope this  

Naoh + hbr -> nabr (salt) + h2o ca (oh)2 + 2hbr - - - > ca (br)2 + 2h2o