Communicable diseases can be what?

The choice indicating that communicable diseases can be transferred from person to person is the most accurate. Communicable diseases, by definition, are infections that can spread from one individual to another through various means, including direct contact, respiratory droplets, and vectors like insects. This essential characteristic distinguishes them from non-communicable diseases, which cannot be spread between people.

While the idea of being localized refers to an infection being confined to a specific area of the body or environment, it doesn't encompass the fundamental nature of communicable diseases. The possibility of eradication by vaccination is also relevant but applies specifically to certain diseases rather than the general definition of communicability. Non-contact facilitation of disease transmission, like through surfaces or aerosols in some cases, can be a method of spread, but does not encompass the definition of communicable diseases as effectively as the direct transfer between individuals. Hence, stating that these diseases are transferred from person to person captures the essence of what makes them communicable.