The correct option is A Cholera, typhoid, pneumonia
Out of the given options, cholera, typhoid, pneumonia are bacterial diseases. Pneumonia is an inflammatory condition of the lung affecting primarily the microscopic air sacs, known as alveoli. Pneumonia can be caused by a variety of viruses, bacteria and sometimes fungi. Pneumococcal pneumonia is caused by bacteria called Streptococcus pneumoniae, which is also called pneumococcus. Cholera is an infectious disease that causes severe watery diarrhoea, which can lead to dehydration and even death if untreated. It is caused by eating food or drinking water contaminated with a bacterium, called Vibrio cholerae. Typhoid is an enteric fever, is a life-threatening illness, caused by infection with the bacterium Salmonella enterica serotype Typhi (S. typhi), usually transmitted through food and drinks contaminated with fecal matter.