Answer:
C) tarnishes in air.
Step-by-step explanation:
Silver is a white metal that tarnishes when it is exposed to air that has the presence of sulphur gases. When exposed, it begins to undergo discoloration. It starts to darken as a result of the reaction with the gases causing the silver object to be disfigured. The commonest sulphur containing gas is hydrogen sulfide. As relative humidity goes up, silver can also tarnish faster.