Cal Believes That a Larger Percentage of a City's Population

Cal believes that a larger percentage of a city's population will engage in public displays of affection in highly populated cities due to feelings of anonymity when an individual is among a lot of other people. He rides a bus in densely populated New York City for five hours straight, watches the bus riders' interactions with each other, and unobtrusively counts the number of couples who are holding hands, hugging, or kissing. He then does the same in the sparsely populated city of Rock Falls, Iowa.
- What is Cal's sample?

A) All the men and women in New York and in Iowa
B) The people who ride the bus he selected in each city
C) Everyone in Rock Falls, Iowa
D) All people in large cities and all people in small cities