What are changeable data?

Each field name used in a(n) ________ must be enclosed within its own pair of square brackets, and the new field name must be followed by a colon.

a. calculated field b. condition c. expression d. wildcard character

If you have a program that may or may not execute a while loop, is it possible to replace that while loop with a do while loop? Explain your answer.

What will be an ideal response?