[amp_mcq option1=”any” option2=”all” option3=”is” option4=”all of the mentioned” correct=”option3″]
The correct answer is: C. is
The is function is used to determine if a value is missing. It returns a boolean value, TRUE if the value is missing and FALSE if the value is not missing.
The any function returns TRUE if any of the values in a list are true, and FALSE if all of the values in the list are false.
The all function returns TRUE if all of the values in a list are true, and FALSE if any of the values in the list are false.
Therefore, the is function is the only function that can be used to determine if a value is missing.