In a low-pressure system, the weather conditions typically include increased cloudiness and precipitation. Therefore, among the given options, "There is no precipitation" and "The sky is Clear" are incorrect responses.
The most accurate response would be that a low-pressure system is associated with "Temperature Changes" due to rising air that can lead to cloud formation and precipitation. The wind may also be more intense in a low-pressure system compared to high-pressure systems, as air moves from high-pressure areas to low-pressure areas.
So, the best response from your options would be "Temperature Changes."