Final answer:
The Gallup Organization conducted a survey asking people what would make them decide not to return to a restaurant. 80% of respondents said poor service would be the reason.
Step-by-step explanation:
The subject of this question is Social Studies. The question is asking about the reason why 80% of respondents would not choose a restaurant to return to, according to a survey conducted by the Gallup Organization. The correct answer is b. Poor service. This means that the majority of people surveyed indicated that poor service would make them decide not to return to a restaurant.