Answer:
Whole Numbers
Explanation:
Integers include both negative and positive numbers. It would be impossible to have negative desks, so that answer is wrong.
Rational numbers include decimals and fractions. It would be irrational to have 0.001 of a desk, so that answer is not right.
Irrational numbers are numbers that cannot be written, such as pi or infinity. You cannot have infinite desks, so that answer is not correct.
Finally, whole numbers are numbers such as 1, 2, 3, 4, etc. This is the most reasonable choice, so the answer is whole numbers.