Question 1321Navigation General

The correct answer is B) trough of low pressure. A trough of low pressure is the area between two high pressure systems, or ridges. The air flows around the high pressure systems, creating an area of lower pressure between them. This trough of low pressure can influence weather patterns and is an important feature to understand for navigation and weather forecasting. The other answer choices are incorrect because a ridge is a high pressure area, not low pressure, and a valley or hill do not accurately describe the meteorological feature between two high pressure systems.