Multiple choice Which of the following is a characteristic of communicable diseases? Community hygiene is ineffective in reducing the incidence of these diseases. They are caused by the attack of pathogens. These diseases are caused by internal factors. Transmission of these diseases does not occur. They occur due to the deficiency of nutrients in the diet. Reveal answer Fill a bubble to check yourself B Correct answer Explanation This is the correct option as this is a characteristic of communicable diseases.