The best example of an ambiguous survey question is:
Since this is the best-selling ice cream available, would you recommend it to a friend? __ Yes __ No
This question is ambiguous because it assumes that the respondent agrees with the statement that the ice cream is the best-selling, which may not be true for their personal experience or opinion. Additionally, "best-selling" is subjective and can vary between different locations or stores, potentially leading to confusion in the respondent's answer.