To pass a variable by value, you include the keyword . . . . . . . . before the name of its corresponding parameter.

The correct answer is: A. ByVal

To pass a variable by value, you include the keyword ByVal before the name of its corresponding parameter. This means that a copy of the variable is passed to the function, and any changes made to the variable inside the function will not affect the original variable.

The other options are incorrect:

• B. Val is not a valid keyword in C#.
• C. PassVal is not a valid keyword in C#.
• D. Pass is not a valid keyword in C#.

I hope this helps!