2.37. A recent GSS asked subjects if they supported legalizing abortion in each of seven different cir- cumstances. The percentage who supported legal- ization varied between 45% (if the woman wants it for any reason) to 92% (if the woman's health is seriously endangered by the pregnancy). This indicates that

(a) Responses can depend greatly on the question wording.

(b) Surveys sample only a small part of the popu- lation and can never be trusted.

(c) The sample must not have been randomly selected.

(d) The sample must have had problems with bias resulting from subjects not telling the truth.