any
all
is
all of the mentioned
Answer is Right!
Answer is Wrong!
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.