Which of the following statements about the physical geography of latin america is false?
a.
the longest mountain range in the world is found in latin america.
b.
the panama canal is partially man-made.
c.
rivers meet the ocean at estuaries, such as the rio de la plata.
d.
el niño is a series of volcanic eruptions caused by tectonic activity.

The correct answer is D. It is false that El Niño is a series of volcanic eruptions caused by tectonic activity.

Explanation:

El Niño is a recurring combined climate and hydrological phenomenon in the Indian Ocean and Pacific Ocean. It usually occurs every three to five years, but there are historical exceptions at intervals of every two years to every seven years, just after Christmas, and can last around 12 to 17 months but sometimes longer or shorter depending on the strength. However, over the past 15 years the intervals have become shorter.  

The name El Niño is Spanish for the "boy" and refers to the child of Jesus, who was born at Christmas time, and Christmas is the time when El Niño usually starts. El Niño is one of the most powerful natural phenomena that exists and affects many parts of the world.

The phenomenon causes flooding in the areas directly affected, but also droughts in the areas farthest from it and other disturbances that vary with each event. Developing countries that are heavily dependent on agriculture and fishing, particularly those bordering the Pacific Ocean, are the most affected, although it is believed to have effects on a global scale through changes in atmospheric circulation throughout the planet.