Question

Bill stood outside the mall and asked every fourth person to enter the mall for their favorite sport. There were four choices: football, baseball, basketball, and other. Bill surveyed a total of 51 people. Of those surveyed, 12 said football is their favorite, 12 said baseball is their favorite, 14 said basketball is their favorite, and 13 said other.

Identify the sample in the situation above.
everyone entering the mall
every fourth person entering the mall
everyone who likes football
everyone who likes basketball