Answer:
D. 12 ÷ 0
Explanation:
Undefined Expression
An expression in mathematics that does not have meaning and so which is not assigned an interpretation is called undefined.
A rational expression is undefined when the denominator is 0. Division by 0 is not defined or does not have a meaning.
From the given expressions, the only one that has a division by 0 is:
D. 12 ÷ 0