The correct answer to the question is : Lightning
EXPLANATION:
Hydrocarbons are the chemical compounds of carbon and hydrogen with their derivatives which are neutral in nature. Hence, they constitute no electric current.
Photosynthesis is the process of production of food by plants. It does not constitute any electric current in nature.
Thunder is created due to the collision between clouds. It can exert only sound pressure.
Lightning is created due to the same process as that of thunder.But it contains heavy electric current which is dangerous for living organisms.
Hence, the correct answer is lightning.
