3. In the third paragraph, Dr. Laragh implies that[A] people should not be afraid of taking excessive salt.[B] doctors should not advise people to avoid salt.[C] an adequate to excessive salt intake is recommended for people in disease.[D] excessive salt intake has claimed some victims in the general population.

4. The phrase "vocal ... exponent" (line 2, para. 4) most probably refers to[A] eloquent doctor.[B] articulate opponent.[C] loud speaker.[D] strong advocate.

5. What is the main message of this text?[A] That the salt scare is not justified.[B] That the cause of hypertension is now understood.[C] That the moderate use of salt is recommended.[D] That salt consumption is to be promoted.