12. Classify the bias in each survey scenario. Suggest how to eliminate the bias. a) A radio station DJ asks its listeners to call in and voice their opinions about increasing taxes to pay for improved subway service. b) A student council survey takes place in the cafeteria, asking students about lunch hour activities in the gym. c) A survey question reads, "Last year, there was an increase in the number of murders in Canada. Are you in favour of hiring more police officers?