Direction: The following question contains four sentences that lack coherence, connection, and development in their present arrangement. There is only one way of rearranging them to make a coherent passage. Choose the correct arrangement from the alternative given and mark your answer as (1), (2), (3) or (4) in the answer sheet.

a. Untreated hepatitis causes severe damage to the liver and the patient may go into coma and also die.

b. Inflation of the liver is known as "hepatitis".

c. Recent research has aimed at developing a vaccine against hepatitis.

d. The virus is spread by food and water.