A case of a chronic disease denotes
Disease occurs for a very long period
The correct option is C:
Explanation for Correct answer
Option C.
Explanation for incorrect answer
Option A. Severe attack of the disease
For example, in the case of asthma, the attack is severe as shortness of breath takes place, which is life-threatening.
Option B. Mild attack of the disease
For example, in the case of diabetes, when the sugar level is low, the person can get fatigued or dizzy for a while until he/she eats something.
Final Answer: Chronic disease occurs for a very long period of time.