Day

1
sunny and warm
cloudy and rainy
drop in temperature
4 clear skies and cold temperatures
2
Observations
3
A student tracks the daily weather. The student's observations are logged in the table. Which factor in
the atmosphere best explains the student's observations?
(1 point)
O High levels of moisture are contained within an air mass.
O A warm air mass replaced a cold air mass.
O A cold front moved into the area.
O A warm front moved into the area.

Based on the observations given, the best explanation for the student's observations would be a cold front moved into the area. The first day starts with sunny and warm weather, but then the weather changes to cloudy and rainy, indicating the arrival of a front. Additionally, there is a drop in temperature and the following days are noted as having clear skies and cold temperatures, which are typical characteristics of a cold front.

so 1 2 3 or 4

The correct answer would be option 3: A cold front moved into the area.