Question: If you were given a new block of code below, what is the result of X if X is passed by reference?

[Block of code]

     1. 34
     2. 17
     3. 43
     4. 22.5
     5. Not listed

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This would be a much more clearer way of handling pass by ref/value. 2 of the answers are correct, so this could be reused to ask the other one. If they're being tricky, they can award half-credit for choosing the wrong pass-by-*. And 3 other answers are junk. And this abstracts out any sort of programming neologims or fetishization of $random_language.