{
  "id": "04",
  "content": [
    {
      "type": "heading",
      "text": "utm_medium: The Marketing Channel"
    },
    {
      "type": "text",
      "html": "<code>utm_medium</code> describes the channel type: <code>email</code>, <code>social</code>, <code>cpc</code>, <code>banner</code>, <code>referral</code>, <code>qr</code>, or similar."
    },
    {
      "type": "text",
      "html": "Medium should answer how the message traveled, not who sent it. A LinkedIn post might use source <code>linkedin</code> and medium <code>social</code>."
    },
    {
      "type": "callout",
      "style": "info",
      "html": "<strong>Practice:</strong> Use medium values that match your reporting habits. If your analytics reports expect <code>email</code>, do not alternate with <code>newsletter</code> as the medium."
    }
  ],
  "quiz": {
    "questions": [
      {
        "id": "q1",
        "type": "single",
        "text": "What does utm_medium describe?",
        "options": [
          {
            "id": "a",
            "text": "The marketing channel type"
          },
          {
            "id": "b",
            "text": "The page language"
          },
          {
            "id": "c",
            "text": "The hosting provider"
          }
        ],
        "correct": [
          "a"
        ]
      },
      {
        "id": "q2",
        "type": "single",
        "text": "Which pair is usually clearer?",
        "options": [
          {
            "id": "a",
            "text": "source=linkedin and medium=social"
          },
          {
            "id": "b",
            "text": "source=social and medium=linkedin"
          },
          {
            "id": "c",
            "text": "source=blue and medium=large"
          }
        ],
        "correct": [
          "a"
        ]
      }
    ]
  }
}