One of the stations Tom gets in his random sample is Manchester Piccadilly. To find opinions, he goes there one Saturday afternoon and asks his questions to the first 100 people who will answer. Name this sampling method.

The sampling method described is **Opportunity sampling** (also known as **Convenience sampling**). This is a non-random sampling technique where participants are selected based on their convenient accessibility and proximity to the researcher. Tom is not using a system or random selection process to choose people at the station; he is simply approaching the first 100 people available who are willing to participate.