The respiratory passage is lined with ________.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Respiratory Passage**: The respiratory passage includes structures such as the nasal cavity, trachea, bronchi, and bronchioles. These structures are essential for the process of breathing.

2. **Identifying the Lining of the Respiratory Passage**: The question asks what lines the respiratory passage. The lining is crucial for protecting the underlying tissues and facilitating the process of respiration.

3. **Recognizing the Type of Membrane**: The respiratory passage is lined with a specific type of membrane known as the mucous membrane. This membrane has specialized functions that aid in the respiratory process.

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