Option 1: Monsoon. Monsoon winds are seasonal winds that occur mainly in South Asia. They are caused by the differential heating of land and sea. Although monsoon winds are significant and have a great impact on the climate and rainfall patterns in the region, they are not considered planetary winds.

Option 2: Trade. Trade winds are a type of planetary wind. They blow from the northeast in the Northern Hemisphere and from the southeast in the Southern Hemisphere. The name "trade winds" comes from the historical trading routes used by sailors to cross the Atlantic and Pacific Oceans. These winds are consistent and play a major role in global weather patterns.

Option 3: Chinook. Chinook winds are warm, dry winds that occur in the Rocky Mountains of North America. They are caused by a downslope airflow, resulting in the warming and drying of the air due to compression. Chinook winds are not planetary winds; instead, they are localized phenomena.

Option 4: Mistral. Mistral winds are strong, cold winds that blow from the northwest in the Rhône Valley in France. They are a localized wind phenomenon and are not considered planetary winds.

Therefore, the correct answer is Option 2: Trade, as trade winds are one of the major types