Multiple Choice

The user selects one option from predefined choices.

Evaluation

• Case-insensitive comparison with trim.
• “B” and “b” are equivalent.
• Score: 0 or 10 (binary).

Request

{
  "exerciseId": "ex_001",
  "area": "vocabulary",
  "type": "multiple_choice",
  "answer": "b",
  "correctAnswer": "b"
}

Responses

// Correct
{ "correct": true,  "score": 10, "feedback": "Correct!",             "metadata": { "area": "vocabulary", "type": "multiple_choice" } }

// Incorrect
{ "correct": false, "score": 0,  "feedback": "Incorrect. Try again.", "metadata": { "area": "vocabulary", "type": "multiple_choice" } }