George is creationg a program that will ask the user to input their grade in school. George wants to prevent the program crashing if the user enters letters instead of a number. Which of the following can be used?

Question

A. for loop

B. try block

C. ValueError signifier

D. trace table

Answer 1

B. try block

By using a try block, George can attempt to convert the user input to an integer and handle any potential errors that may arise, such as if the user enters letters instead of a number. This will prevent the program from crashing if unexpected input is received.