It would be B, the weather patterns outside.
Answer:
Explanation:
Given
distance traveled by Passenger train is 
distance traveled by Freight train is 
Both take same time to travel
suppose speed of freight train is x mph
so speed of passenger train is 20+x mph
we know time




speed of passenger train
A meter is 100 meters. So a hundredth of a meter stick is a centimeter.<span />