Why is the len ( ) function useful when using a loop to iterate through a stack? a. the len ( ) function will print the elements of the stack. b. the len ( ) function will run with each iteration, printing the element number each time. c. the len ( ) function will tell the program the number of elements in the stack. d. the len ( ) function will remove the duplicate elements in the stack.

C

Explanation:

The len() function will basically tell the number of elements in the stack. You can say that len() will give us the lenght of the stack , how many elements have been added to the stack.

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