Since neither answer gives an amount of time the answer is C.
Explanation:
Climatology is the study of changes in atmospheric phenomena such as temperature, air pressure and composition over significant periods of time. ... Meteorology is the study of atmospheric phenomena on a day to day basis which reflect regular changes in atmospheric pressure and temperature
<span>Waters in the eastern Pacific steadily gets warmer </span> El Nino is caused by the periodic shift in wind speed and direction in the tropical eastern Pacific which leads to changes in sea Surface temperatures.
