A political consultant conducts a survey to determine what position the mayoral candidate she works for should take on a proposed smoking ban in restaurants. Which of the following survey questions will deliver an unbiased response?

a. Should the city ban smoking in restaurants to protect our children from second hand smoke?
b. Does the city have the right to restrict recreational activities such as moderate consumption of alcohol or tobacco on the premises of privately owned businesses
c. Should tobacco a known cause of lung cancer be banned from public spaces such as restaurants?
d. None of the above.