What are living and nonliving reservoirs?

In the study of disease transmission, a reservoir of an infectious agent refers to the habitat where that infectious agent lives, grows and multiplies. There are two basic types of reservoirs, living and non living reservoirs. A living reservoir refers to a living organism in which an infectious agent is residing. A living reservoir can be a human or an animal. A non living reservoir on the other hand refers to a non living organism which accommodates an infectious agent. Examples of non living reservoirs are soils, water, air, etc.Through these reservoirs infectious diseases can be spread to healthy individuals. 

The answer would be a. aluminum can

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