A survey asked 1,000 city residents if they support a new public library. 60% said yes, 30% said no, and 10% were undecided. The survey has a margin of error of ±3 percentage points. Which of the following statements is a valid conclusion?

The correct answer to the question "A survey asked 1,000 city residents if they support a new public library. 60% said yes, 30% said no, and 10% were undecided. The survey has a margin of error of ±3 percentage points. Which of the following statements is a valid conclusion?" is Option B: More residents support the library than oppose it..

The other options — A) Between 57% and 63% of residents definitely support the new library., C) It is possible that less than 50% of residents support the new library., D) The actual percentage of residents who support the library is exactly 60%. — are incorrect for this GMAT Exam Prep question. As explained above: The support range is 57-63% and opposition range is 27-33%. Even at the lowest end of support (57%) and highest end of opposition (33%), support is still definitively higher than opposition (57% > 33…