Can you help me solve the Python question?

Using only the topics presented in this class, a program repeatedly asks the user for an input choice until the user enters a "legal" (i.e., acceptable to the program designer) value. This program might accomplish this using (check any options that would work): Assume no method or function calls are used in the program. Neither a loop nor an "if" statement. A loop but no "if" statement. O An "if" statement but no loop. A loop and an "if" statement