What type of air is associated with a low pressure system?

Low pressure systems are characterized by rising air. When a low pressure system develops, the atmospheric pressure is lower than that of the surrounding areas, prompting the air to move upwards. As the warm air rises, it cools and can lead to the formation of clouds and precipitation. This upward movement is associated with various weather phenomena, including storms. In contrast, high pressure systems provide sinking air, which typically leads to clearer skies and more stable weather conditions. Thus, the behavior of air within a low pressure system fundamentally involves rising air, making that choice the correct answer.