Give a reason why Tom should also find opinions of people where HS2 will not have a station.

To ensure his study is balanced and his sample is representative of the whole country's opinion, Tom must include people from various locations, not just those who will directly benefit from an HS2 station. People in areas without a station may have very different perspectives: - They might be more likely to be against it because they are not getting the benefits of a new station but are still affected by the costs (through national taxes) or disruption (if the line passes near their town). - Including their views prevents a biased sample that over-represents people who are likely to be in favour of the project. Therefore, sampling from non-station locations is crucial for the validity and generalisability of his findings.