Explanation:

3rd option is correct. El Nino is a climate anomaly in the South Pacific: In irregular intervals, the ordinary weather situation changes. The phenomenon occurs between Latin America's west coast and Southeast Asia, but its effects can be felt worldwide and it has often led to natural disasters.
Usually, warm sea surface water flows west from Latin America while cold water flows from the depths of the ocean to Latin America's coasts. In El Nino years those currents subside and sometimes change direction. The surface sea water off the coasts of Australia and Indonesia drop several degrees, whereas water temperatures in Latin America rise.