A statistical question produces data that varies.

Which question below will produce data that varies?
How many days are in a leap year?
How many quarts are in a gallon?
How many senses are there?
How many students are in each class?

The question "How many students are in each class?" will produce data that varies. The number of students in each class can vary depending on the specific class and school.

a b c or d

The correct answer is D. "How many students are in each class?"