Which of the following would be an example research question

Which of the following would be an example research question when using a chi-square?

a) does the amount of training predict how severe injuries will be if someone is injured calculated statistics?

b) Did Alabama, Auburn and UAB sell an equal number of tickets during 2013 football season?

c) Is there a relationship between motivation and GPA?

d) Is there a relationship between time spent practicing swimming and time it takes to perform the 100-yard freestyle ?

Answer is \'b\'

Did Alabama, Auburn and UAB sell an equal number of tickets during 2013 foot ball season