1. Correct Answer
   Incorrect Answer
   a
2. Correct Answer
   Incorrect Answer
   b
3. Correct Answer
   Incorrect Answer
   c
4. Correct Answer
   Incorrect Answer
   d

* Iteration 1: `x = 0`, even → `x += 3` → `x = 3` * Iteration 2: `x = 3`, odd → `x++` → `x = 4` * Iteration 3: `x = 4`, even → `x += 3` → `x = 7` Loop ends when `x = 7`, so output is `7`.