- Where does the National Weather Service get weather observations?
a. from 11,000 Cooperative Weather Observers
b. from thousands of radar installations
c. from thousands of weather satellites
d. from weather stations set up and operated by government meteorologists

D

Explanation:

The Automated Surface Observation Systems (ASOS) provide the nation's primary surface weather observations from airports across the U.S. Aircraft are used to collect weather data over land and sea.

rain is the best answer

i think it is d. objects resist changes in their state of motion.