Chinook winds are warm, dry winds that occur in the western United States and Canada. They are a type of local wind that descends along the eastern slopes of the Rocky Mountains in mid-latitudes. While they bring changes in weather patterns, it is not correct to say that they bring lots of rain with them. The correct answer is option D.

Explanation:

1. Chinook winds are local winds:
- Chinook winds are a type of local wind that is specific to the western United States and Canada.
- They are not global winds that occur across the entire planet but are limited to a particular region.

2. They descend along the Eastern slopes of the Rocky Mountains in mid-latitudes:
- Chinook winds are formed when moist air from the Pacific Ocean rises over the western slopes of the Rocky Mountains.
- As the air rises, it cools and condenses, creating precipitation on the western side of the mountains.
- Once the air reaches the top of the mountain range, it starts descending on the eastern slopes.
- As the air descends, it warms up and gains speed, resulting in the characteristic warm and dry Chinook winds.

3. They bring lots of rain with them:
- This statement is incorrect. Chinook winds are warm and dry winds, which means they do not bring significant amounts of rain with them.
- In fact, Chinook winds can have a drying effect on the landscape as they evaporate moisture from the ground and vegetation.
- They are often associated with rapid snowmelt in winter due to the warm temperatures they bring, but they do not typically bring substantial rainfall.

4. They benefit agriculture:
- Chinook winds can have both positive and negative effects on agriculture.
- On one hand, they can help to melt snow and ice, allowing for earlier planting and extending the growing season.
- On the other hand, their warm and dry nature can lead to increased evaporation and drying of soil moisture, which can be detrimental to crops.
- The overall impact of Chinook winds on agriculture can vary depending on the specific region and the timing of their occurrence.

In conclusion, Chinook winds are warm, dry winds that descend along the eastern slopes of the Rocky Mountains in mid-latitudes. They are local winds and do not bring significant amounts of rain with them. While they can have both positive and negative effects on agriculture, it is not correct to say that they benefit agriculture in terms of bringing rainfall.