its C
because a rain gauge is for rain, a buoy is to tract temperature change in water and the currents. a thermometer is for temps outside for for yourself. and a satellite can track anything around the world
Answer: c. satellite
Explanation:
Satellite is a device which is launched in the space to monitor and observe the natural process occurring on the planet like earth. It can be used to measure the area covered by the land, sea or river, the amount of rainfall occurring in a concerned region.
On the basis of the above description, satellite is the device which can be used to make measurements globally.