High school geography

The weather system is a cold front. Reason for judgment: The cold air mass actively moves to the warm air mass.

First of all, is the wind direction of option D blowing outward from the sports center? (The picture is not clear), if so, then both options A and D are high-voltage systems. Judgment basis: the airflow diverges from the center to the surrounding areas. Due to the high-pressure system, the airflow sinks, and it will be sunny without precipitation. Naturally, there will be no cold front weather as shown. So exclude options a and d.

Options b and c are low-pressure systems with precipitation. The difference is that B is in the low pressure trough on the west side, and the airflow flows from high latitude to low latitude, which is cold front weather. C In the trough of low pressure on the east side, the airflow flows from low latitude to high latitude, which is a warm front. So the correct answer is B.

I hope I can help you.