What type of system is associated with weather that has lots of clouds and thunderstorms with the possibility of tornadoes?

Question

Mercury · Answer

a. low pressure system b. circulatory system c. arctic system d. high pressure system as a major hint I will narrow it down to low vs high pressure system "Low-pressure systems are associated with clouds and precipitation that minimize temperature changes throughout the day, whereas high-pressure systems normally associate with dry weather and mostly clear skies with larger diurnal temperature changes due to greater radiation at night and greater sunshine during the day." https://en.wikipedia.org/wiki/Pressure_system#:~:text=Low%2Dpressure%20systems%20are%20associated,greater%20sunshine%20during%20the%20day.