Final answer:
The correct synonym for 'unerring' in the phrase 'An UNERRING sense of what the public wants' is 'accurate,' as unerring implies being free from errors or being infallible, thus accurately reflecting the public's aggregate views and stands on issues.
Step-by-step explanation:
The question asks for a synonym for the word unerring, which is used in the context of an 'Unerring sense of what the public wants.' The synonyms given as options are: accurate, fallible, uncertain, incorrect. The word unerring means not likely to make or be subject to error; in other words, it means being unfailing or infallible. Therefore, the correct synonym for unerring, in this context, would be accurate (option a), which means free from error or defects, precise, or exact.
It's important to consider the context of public opinion when determining the answer. Public opinion can influence and reflect what the public wants, which is pivotal for elected officials to adhere to the needs and preferences of the electorate. The public opinion reflects aggregate views which aren't merely based on voting but also include people’s feelings and stands on various issues.