Final answer:
Tetanus is not a communicable disease as it cannot be transmitted from one person to another but is transmitted through contact with a bacterium in the environment. The Correct Answer is Option. C.
Step-by-step explanation:
Among the diseases listed, tetanus is not a communicable disease. Communicable diseases, such as tuberculosis, typhoid fever, and aids, can be transmitted from person to person via various pathways.
Tetanus, unlike these, is caused by Clostridium tetani and is typically introduced through a wound or a cut, coming into contact with the spores of the bacteria found in soil or other contaminated mediums. Therefore, an infected person cannot directly pass tetanus to another person.