{
  "title": "Fun Quiz: Scenario and Image Challenge",
  "is_fun": true,
  "fun_level": "challenger",
  "questions": [
    {
      "type": "mcq",
      "reading_page": {
        "title": "Scenario: investigating photosynthesis",
        "text": "A learner places an aquatic plant beneath a lamp and counts the oxygen bubbles released each minute. The lamp is moved closer while temperature and carbon dioxide concentration are kept constant.",
        "image": "photosynthesis_scenario.png"
      },
      "question": "Which variable is deliberately changed in this investigation?",
      "image": "lamp_distance_graph.png",
      "options": [
        "Light intensity",
        "Temperature",
        "Carbon dioxide concentration",
        "Plant species"
      ],
      "answer": "Light intensity",
      "marks": 1,
      "explanation": "Moving the lamp changes the light intensity reaching the plant while the other stated factors are controlled.",
      "similar_question": "Which variable is measured by counting the oxygen bubbles per minute?",
      "similar_options": [
        "Rate of photosynthesis",
        "Light intensity",
        "Water temperature",
        "Distance from the lamp"
      ],
      "similar_correct_answer": "Rate of photosynthesis"
    }
  ]
}