The decomposition of silver bromide into silver and bromine in the presence of sunlight is an example of:
Correct: C
When a decomposition reaction is caused by light energy, it is known as photolytic decomposition (or photochemical decomposition). Silver bromide (AgBr) is famously used in black and white photography, where light energy causes its decomposition:
2AgBr(s) --(light)--> 2Ag(s) + Br₂(g).