Question: A survey was conducted to determine the percentage of parents who would support raising the legal driving age to 18. The results were stated as 67% with a margin of error of ±3%. What is meant by ±3%?
A: Three percent of the population were not surveyed.
B: In the sample, the percentage of parents who would support raising the driving age is between 64% and 70%.
C: The percentage of the entire population of parents who would support raising the driving age is between 64% and 70%.
D: It is unlikely that the given sample proportion result could be obtained unless the true percentage was between 64% and 70%.
Please eliminate two incorrect options first, then think it step by step and choose the most proper one option.