Determine which sample better represents the entire population.
30 people in a coffee shop are surveyed to find out the favorite restaurant of the city residents.
100 people of the city are randomly selected from the phone directory and surveyed to find out the favorite restaurant of the city residents.
120 students at the local community college are surveyed to find out the favorite restaurant of the city residents.
100 people entering an ice cream shop are surveyed to find out the favorite restaurant of the city residents.