Explanation:

Local winds are winds that are influenced by local geographic features such as mountains, valleys, and bodies of water. These winds are usually confined to a relatively small area and have distinct characteristics.

Chinook - USA:
Chinook is a warm and dry wind that occurs on the eastern slopes of the Rocky Mountains in North America, primarily in the western United States and Canada. It is known for its rapid rise in temperature and can cause snow to melt quickly. The warm winds are formed when moist air from the Pacific Ocean rises over the mountains, cools and condenses, and then descends on the leeward side of the mountains, warming up through compression. This causes a rapid increase in temperature, sometimes by as much as 20-30 degrees Celsius in just a few hours. The Chinook wind is also known as the "snow-eater" because it can melt snow and ice rapidly.

Foehn - Switzerland:
Foehn is a warm and dry wind that occurs in the Alps region, particularly in Switzerland. It is caused by moist air being forced to rise over mountains, cooling and condensing, and then descending on the leeward side. As the air descends, it undergoes compression, which causes it to warm up and become drier. The Foehn wind is characterized by its ability to rapidly raise temperatures and melt snow, similar to the Chinook wind. It can also bring clear skies and strong gusts of wind. The Foehn wind plays a significant role in the local climate and has both positive and negative effects on the environment.

Harmattan - Europe:
The Harmattan is a dry and dusty wind that blows over the Sahel region of West Africa, not Europe. It is most common during the winter months and is characterized by its hot, dry, and dusty conditions. The Harmattan wind is formed when dry air from the Sahara Desert moves southward, picking up dust and sand particles along the way. It can reduce visibility, create hazy conditions, and cause respiratory problems for humans and animals. The Harmattan wind can also bring a drop in humidity and lower temperatures, making it feel cooler than it actually is. It is an important wind system in West Africa and has both cultural and environmental impacts.

Conclusion:
Based on the above explanation, we can conclude that only the pair (1) Chinook - USA and (2) Foehn - Switzerland are correctly matched. The pair (3) Harmattan - Europe is incorrect as the Harmattan wind occurs in West Africa, not Europe. Therefore, the correct answer is option B - 1 and 2 only.