What result do you expect when you multiply any number by zero?

When any number is multiplied by zero, the result is always zero. This holds true for all real numbers, which means whether the initial number is positive, negative, or zero itself, the outcome of the multiplication will consistently be zero.

This principle is a fundamental property of multiplication in mathematics. It reflects the concept that combining or adding zero groups of anything—no matter how many items are in those groups—results in nothing, or zero.

The other options suggest results that do not align with this property of multiplication. Positive numbers would imply that the outcome is greater than zero, and negative numbers suggest the opposite. Undefined is also not a valid result in this context, as multiplication by zero produces a clear and definite outcome.