A large city passed a new tax on sugary beverages. A few months after the tax goes into effect, the mayor wants to use social media to learn about how residents feel about the tax. The mayor creates a poll on Twitter and invites residents to share how they feel about the new tax. About 70% of responses oppose the new tax. Which of these is the best explanation for why this result is probably biased?
Choose 1
A. Nonresidents might participate in the poll, so 70% is likely an underestimate.
B. Nonresidents might participate in the poll, so 70% is likely an overestimate.
C. Opponents of the new tax are more likely to respond than anyone else, so 70% is likely an underestimate.
D. Opponents of the new tax are more likely to respond than anyone else, so 70% is likely an overestimate.