The correct answer is B. Warm water moving toward the coast of South America
Step-by-step explanation:
El Niño is a phenomenon in the climate that mainly occurs as warm ocean water develops in the Pacific Ocean especially in the Equator Pacific including the coast of South America. This causes changes in pressure due to the temperature in the ocean water as well as changes in the rain. Additionally, this phenomenon is the opposite of the one of La Niña in which the temperature in the ocean is colder rather than warmer. Also, these types of climate changes are part of cycles that last around a year but can take place over multiple years. Therefore, the climate condition that occurs during this phenomenon is warm water moving toward the coast of South America.