When the sprite is clicked, what will be displayed?

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BlackTom AI · Accepted Answer

Question: When the sprite is clicked, what will be displayed?
Option a: Hello! — This would happen if the if condition evaluated to true (so the branch showing Hello! runs). However, in this setup the condition inside the if block is preceded by a not, which changes which branch executes.
Option b: 2 — This is not a textual display and does not correspond to any say block in the script.
Option c: nothing — The script includes a say block in both the if and else branches, so something is always displayed for 2 seconds regardless of the condition.
Option d: Bye! — This is the correct result for this setup. The script reads: if not [green shape] then say "Hello!" for 2 seconds, else say "Bye!" for 2 seconds. If the condition inside the if evaluates in such a way that the negation makes the if condition false, the program executes the else branch, displaying "Bye!" for 2 seconds.

Explanation of why the correct option occurs: The key is the not operator applied to the condition inside the if. When the condition inside the if would make the then-branch active, applying not flips it to false, causing the else branch to run. As a result, the sprite says "Bye!" for 2 seconds.

Why the other options are not correct given the structure:
- Hello! would only appear if the if condition evaluated to true after applying the not. Since the provided setup leads to the else path being taken, Hello! does not display.
- 2 is not a valid display text in the say blocks; the code uses phrases like Hello! or Bye! within a say block, not just the number 2.
- nothing would require that neither say block runs, but the Scratch blocks here include explicit say blocks in both branches, so something is always displayed.

MUF0051 ICT Unit 1 - Semester 2, 2025 Programming test

When the sprite is clicked, what will be displayed?

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